diff --git a/BEST_PRACTICES.md b/BEST_PRACTICES.md
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+# c77_secure_db Best Practices Guide
+
+This document provides comprehensive security best practices for implementing and maintaining c77_secure_db in production environments.
+
+## 🛡️ **Core Security Principles**
+
+### 1. **Never Bypass Security Controls**
+
+```sql
+-- ❌ NEVER DO THIS - Will be blocked but shows intent to bypass
+INSERT INTO secure_table (name) VALUES ('data');
+UPDATE secure_table SET value = 'changed' WHERE id = 1;
+DELETE FROM secure_table WHERE id = 1;
+
+-- ✅ ALWAYS DO THIS - Use secure operations
+SELECT c77_secure_db_operation(jsonb_build_object(
+    'schema_name', 'myapp',
+    'table_name', 'secure_table',
+    'operation', 'insert',
+    'data', jsonb_build_object('name', 'data')
+));
+```
+
+### 2. **Validate All Inputs**
+
+```sql
+-- ❌ BAD - No validation
+SELECT c77_secure_db_operation(user_input::jsonb);
+
+-- ✅ GOOD - Validate structure and content
+DO $$
+DECLARE
+    v_input jsonb := user_input::jsonb;
+BEGIN
+    -- Validate required fields
+    IF NOT (v_input ? 'schema_name' AND v_input ? 'table_name' AND v_input ? 'operation') THEN
+        RAISE EXCEPTION 'Missing required fields in operation data';
+    END IF;
+    
+    -- Validate operation type
+    IF NOT (v_input->>'operation') IN ('insert', 'update', 'upsert', 'delete', 'soft_delete') THEN
+        RAISE EXCEPTION 'Invalid operation type';
+    END IF;
+    
+    -- Proceed with validated input
+    PERFORM c77_secure_db_operation(v_input);
+END $$;
+```
+
+### 3. **Implement Proper Error Handling**
+
+```php
+// ✅ Laravel Example - Comprehensive error handling
+public function secureOperation(array $data): array
+{
+    try {
+        $result = DB::selectOne(
+            'SELECT c77_secure_db_operation(?) as result',
+            [json_encode($data)]
+        );
+        
+        $response = json_decode($result->result, true);
+        
+        if (!$response['success']) {
+            // Log security-relevant failures
+            Log::warning('Secure operation failed', [
+                'operation' => $data['operation'],
+                'table' => $data['table_name'],
+                'error' => $response['error'],
+                'operation_id' => $response['operation_id'] ?? null,
+                'user_id' => auth()->id()
+            ]);
+            
+            throw new SecureDbException($response['error']);
+        }
+        
+        return $response;
+        
+    } catch (Exception $e) {
+        // Never expose internal error details to users
+        Log::error('Secure DB exception', [
+            'error' => $e->getMessage(),
+            'data' => $data,
+            'user_id' => auth()->id()
+        ]);
+        
+        throw new SecureDbException('Operation failed due to security constraints');
+    }
+}
+```
+
+## 🔐 **Access Control Best Practices**
+
+### 1. **Role-Based Permissions**
+
+```sql
+-- Create application-specific roles
+CREATE ROLE myapp_read_only;
+CREATE ROLE myapp_operator; 
+CREATE ROLE myapp_administrator;
+
+-- Grant appropriate secure database roles
+GRANT c77_secure_db_readonly TO myapp_read_only;
+GRANT c77_secure_db_user TO myapp_operator;
+GRANT c77_secure_db_admin TO myapp_administrator;
+
+-- Assign users to roles (never grant c77_secure_db roles directly)
+GRANT myapp_operator TO app_user;
+GRANT myapp_read_only TO reporting_user;
+GRANT myapp_administrator TO dba_user;
+```
+
+### 2. **RBAC Integration**
+
+```sql
+-- Define granular permissions
+SELECT c77_rbac_grant_feature('data_entry_clerk', 'secure_db_insert');
+SELECT c77_rbac_grant_feature('data_manager', 'secure_db_insert');
+SELECT c77_rbac_grant_feature('data_manager', 'secure_db_update');
+SELECT c77_rbac_grant_feature('supervisor', 'secure_db_delete');
+SELECT c77_rbac_grant_feature('auditor', 'secure_db_admin');
+
+-- Use scope-based access control
+SELECT c77_rbac_assign_subject('emp_001', 'data_entry_clerk', 'department', 'sales');
+SELECT c77_rbac_assign_subject('emp_002', 'data_manager', 'region', 'north_america');
+SELECT c77_rbac_assign_subject('emp_003', 'supervisor', 'global', 'all');
+
+-- Always set user context in applications
+SET "c77_rbac.external_id" TO 'current_user_id';
+```
+
+### 3. **Principle of Least Privilege**
+
+```sql
+-- ❌ BAD - Overly broad permissions
+GRANT c77_secure_db_admin TO app_user;
+
+-- ✅ GOOD - Minimal necessary permissions
+GRANT c77_secure_db_user TO app_user;
+
+-- ❌ BAD - Global access for everyone
+SELECT c77_rbac_assign_subject('user_123', 'admin', 'global', 'all');
+
+-- ✅ GOOD - Scoped access
+SELECT c77_rbac_assign_subject('user_123', 'operator', 'department', 'finance');
+```
+
+## 🔍 **Data Integrity Best Practices**
+
+### 1. **Regular Integrity Verification**
+
+```sql
+-- Daily verification of critical tables
+CREATE OR REPLACE FUNCTION daily_integrity_check()
+RETURNS void LANGUAGE plpgsql AS $$
+DECLARE
+    v_result jsonb;
+    v_critical_tables text[] := ARRAY['users', 'transactions', 'audit_logs'];
+    v_table text;
+BEGIN
+    FOREACH v_table IN ARRAY v_critical_tables LOOP
+        SELECT c77_secure_db_verify_content_hashes('myapp', v_table) INTO v_result;
+        
+        IF (v_result->>'mismatch_count')::integer > 0 THEN
+            RAISE EXCEPTION 'CRITICAL: Data integrity violation detected in table %', v_table
+                USING HINT = 'Immediate investigation required',
+                      ERRCODE = 'data_corrupted';
+        END IF;
+        
+        RAISE NOTICE 'Integrity check passed for table %: % records verified', 
+            v_table, v_result->>'total_records';
+    END LOOP;
+END;
+$$;
+
+-- Schedule daily execution
+SELECT cron.schedule('daily-integrity-check', '0 1 * * *', 'SELECT daily_integrity_check();');
+```
+
+### 2. **Hash Exclusion Strategy**
+
+```sql
+-- Exclude frequently changing metadata from hashes
+COMMENT ON COLUMN myapp.users.content_hash IS 
+'{"exclude_hash_columns": ["last_login", "login_count", "last_activity", "session_data"]}';
+
+-- Include business-critical data in hashes
+COMMENT ON COLUMN myapp.transactions.content_hash IS 
+'{"exclude_hash_columns": ["created_at", "updated_at"]}';  -- Minimal exclusions
+```
+
+### 3. **Tamper Detection Response**
+
+```sql
+-- Automated response to tampering detection
+CREATE OR REPLACE FUNCTION handle_tampering_detection(
+    p_table_name text,
+    p_record_id text,
+    p_expected_hash text,
+    p_actual_hash text
+)
+RETURNS void LANGUAGE plpgsql AS $$
+BEGIN
+    -- Log the incident
+    INSERT INTO security_incidents (
+        incident_type,
+        table_name,
+        record_id,
+        expected_hash,
+        actual_hash,
+        detected_at,
+        severity
+    ) VALUES (
+        'DATA_TAMPERING',
+        p_table_name,
+        p_record_id,
+        p_expected_hash,
+        p_actual_hash,
+        now(),
+        'CRITICAL'
+    );
+    
+    -- Notify security team
+    PERFORM pg_notify('security_alert', jsonb_build_object(
+        'type', 'DATA_TAMPERING',
+        'table', p_table_name,
+        'record_id', p_record_id,
+        'severity', 'CRITICAL'
+    )::text);
+    
+    -- Optional: Quarantine the record
+    -- UPDATE myapp.table_name SET quarantined = true WHERE id = p_record_id;
+END;
+$$;
+```
+
+## 📊 **Monitoring and Alerting Best Practices**
+
+### 1. **Continuous Health Monitoring**
+
+```sql
+-- Comprehensive health monitoring
+CREATE OR REPLACE FUNCTION security_health_monitor()
+RETURNS jsonb LANGUAGE plpgsql AS $$
+DECLARE
+    v_health jsonb;
+    v_alerts jsonb[] := '{}';
+    v_error_rate numeric;
+    v_token_count integer;
+BEGIN
+    -- Get system health
+    SELECT c77_secure_db_health_check() INTO v_health;
+    
+    -- Check error rate
+    v_error_rate := (v_health->>'error_rate_1h')::numeric;
+    IF v_error_rate > 5 THEN
+        v_alerts := v_alerts || jsonb_build_object(
+            'type', 'HIGH_ERROR_RATE',
+            'severity', 'WARNING',
+            'value', v_error_rate,
+            'threshold', 5,
+            'message', 'Error rate exceeds acceptable threshold'
+        );
+    END IF;
+    
+    -- Check token buildup
+    v_token_count := (v_health->>'active_tokens')::integer;
+    IF v_token_count > 100 THEN
+        v_alerts := v_alerts || jsonb_build_object(
+            'type', 'TOKEN_BUILDUP',
+            'severity', 'WARNING',
+            'value', v_token_count,
+            'threshold', 100,
+            'message', 'Excessive active tokens may indicate issues'
+        );
+    END IF;
+    
+    RETURN jsonb_build_object(
+        'health_status', v_health,
+        'alerts', v_alerts,
+        'alert_count', array_length(v_alerts, 1),
+        'timestamp', now()
+    );
+END;
+$$;
+```
+
+### 2. **Audit Log Analysis**
+
+```sql
+-- Suspicious activity detection
+CREATE OR REPLACE VIEW security_anomalies AS
+SELECT 
+    'High Error Rate User' as anomaly_type,
+    user_name,
+    count(*) as error_count,
+    count(*) * 100.0 / SUM(count(*)) OVER() as error_percentage
+FROM c77_secure_db_operation_audit 
+WHERE created_at > now() - interval '24 hours'
+  AND success = false
+GROUP BY user_name
+HAVING count(*) > 10
+
+UNION ALL
+
+SELECT 
+    'Unusual Activity Volume' as anomaly_type,
+    user_name,
+    count(*) as operation_count,
+    NULL as error_percentage
+FROM c77_secure_db_operation_audit 
+WHERE created_at > now() - interval '1 hour'
+GROUP BY user_name
+HAVING count(*) > 100
+
+UNION ALL
+
+SELECT 
+    'Off-Hours Activity' as anomaly_type,
+    user_name,
+    count(*) as operation_count,
+    NULL as error_percentage
+FROM c77_secure_db_operation_audit 
+WHERE created_at > now() - interval '24 hours'
+  AND EXTRACT(hour FROM created_at) NOT BETWEEN 8 AND 18
+GROUP BY user_name
+HAVING count(*) > 5;
+
+-- Review anomalies regularly
+SELECT * FROM security_anomalies ORDER BY anomaly_type, operation_count DESC;
+```
+
+### 3. **Performance Monitoring**
+
+```sql
+-- Performance baseline and alerting
+CREATE OR REPLACE FUNCTION performance_monitor()
+RETURNS jsonb LANGUAGE plpgsql AS $$
+DECLARE
+    v_slow_operations jsonb;
+    v_avg_time numeric;
+    v_p95_time numeric;
+BEGIN
+    -- Calculate performance metrics
+    SELECT 
+        avg(execution_time_ms),
+        percentile_cont(0.95) WITHIN GROUP (ORDER BY execution_time_ms)
+    INTO v_avg_time, v_p95_time
+    FROM c77_secure_db_operation_audit 
+    WHERE created_at > now() - interval '1 hour'
+      AND execution_time_ms IS NOT NULL;
+    
+    -- Identify slow operations
+    SELECT jsonb_agg(
+        jsonb_build_object(
+            'operation_type', operation_type,
+            'schema_name', schema_name,
+            'table_name', table_name,
+            'avg_time_ms', avg(execution_time_ms),
+            'operation_count', count(*)
+        )
+    ) INTO v_slow_operations
+    FROM c77_secure_db_operation_audit 
+    WHERE created_at > now() - interval '1 hour'
+      AND execution_time_ms > 1000  -- Operations > 1 second
+    GROUP BY operation_type, schema_name, table_name;
+    
+    RETURN jsonb_build_object(
+        'avg_execution_time_ms', v_avg_time,
+        'p95_execution_time_ms', v_p95_time,
+        'slow_operations', v_slow_operations,
+        'timestamp', now()
+    );
+END;
+$$;
+```
+
+## 🔧 **Maintenance Best Practices**
+
+### 1. **Automated Maintenance Schedule**
+
+```sql
+-- Comprehensive maintenance routine
+CREATE OR REPLACE FUNCTION automated_maintenance()
+RETURNS jsonb LANGUAGE plpgsql AS $$
+DECLARE
+    v_tokens_cleaned integer;
+    v_audit_archived integer;
+    v_health jsonb;
+BEGIN
+    -- Clean expired tokens
+    SELECT c77_secure_db_cleanup_expired_tokens() INTO v_tokens_cleaned;
+    
+    -- Archive old audit logs (keep 90 days)
+    WITH archived AS (
+        DELETE FROM c77_secure_db_operation_audit 
+        WHERE created_at < (now() - interval '90 days')
+        RETURNING *
+    )
+    SELECT count(*) INTO v_audit_archived FROM archived;
+    
+    -- Update statistics
+    ANALYZE c77_secure_db_auth_tokens;
+    ANALYZE c77_secure_db_operation_audit;
+    ANALYZE c77_secure_db_secure_schemas;
+    
+    -- Health check
+    SELECT c77_secure_db_health_check() INTO v_health;
+    
+    RETURN jsonb_build_object(
+        'tokens_cleaned', v_tokens_cleaned,
+        'audit_records_archived', v_audit_archived,
+        'health_status', v_health,
+        'maintenance_completed_at', now()
+    );
+END;
+$$;
+
+-- Schedule maintenance
+SELECT cron.schedule('secure-db-maintenance', '0 2 * * *', 'SELECT automated_maintenance();');
+```
+
+### 2. **Backup and Recovery**
+
+```bash
+#!/bin/bash
+# secure-db-backup.sh - Backup script for secure database
+
+# Create timestamped backup
+TIMESTAMP=$(date +%Y%m%d_%H%M%S)
+BACKUP_FILE="secure_db_backup_${TIMESTAMP}.sql"
+
+# Full database backup
+pg_dump -Fc -h localhost -U postgres myapp_database > "${BACKUP_FILE}"
+
+# Backup extension-specific data
+pg_dump -h localhost -U postgres \
+    --table=c77_secure_db_operation_audit \
+    --table=c77_secure_db_secure_schemas \
+    myapp_database > "secure_db_metadata_${TIMESTAMP}.sql"
+
+# Verify backup integrity
+if pg_restore --list "${BACKUP_FILE}" > /dev/null 2>&1; then
+    echo "Backup ${BACKUP_FILE} created successfully"
+else
+    echo "ERROR: Backup verification failed"
+    exit 1
+fi
+
+# Clean old backups (keep 30 days)
+find /backup/path -name "secure_db_backup_*.sql" -mtime +30 -delete
+```
+
+### 3. **Security Updates**
+
+```sql
+-- Security update validation procedure
+CREATE OR REPLACE FUNCTION validate_security_update()
+RETURNS jsonb LANGUAGE plpgsql AS $$
+DECLARE
+    v_test_results jsonb;
+    v_health_before jsonb;
+    v_health_after jsonb;
+BEGIN
+    -- Pre-update health check
+    SELECT c77_secure_db_health_check() INTO v_health_before;
+    
+    -- Run comprehensive tests
+    SELECT c77_secure_db_run_all_tests() INTO v_test_results;
+    
+    -- Post-update health check
+    SELECT c77_secure_db_health_check() INTO v_health_after;
+    
+    -- Validate update success
+    IF (v_test_results->>'overall_status') != 'ALL_TESTS_PASSED' THEN
+        RAISE EXCEPTION 'Security update validation failed: %', v_test_results->>'overall_status';
+    END IF;
+    
+    RETURN jsonb_build_object(
+        'update_validated', true,
+        'test_results', v_test_results,
+        'health_before', v_health_before,
+        'health_after', v_health_after,
+        'validation_timestamp', now()
+    );
+END;
+$$;
+```
+
+## 🚨 **Incident Response Best Practices**
+
+### 1. **Security Incident Classification**
+
+```sql
+-- Security incident severity levels
+CREATE TYPE incident_severity AS ENUM ('LOW', 'MEDIUM', 'HIGH', 'CRITICAL');
+
+-- Incident response procedures
+CREATE OR REPLACE FUNCTION security_incident_response(
+    p_incident_type text,
+    p_severity incident_severity,
+    p_details jsonb
+)
+RETURNS void LANGUAGE plpgsql AS $$
+BEGIN
+    -- Log incident
+    INSERT INTO security_incidents (
+        incident_type,
+        severity,
+        details,
+        reported_at,
+        status
+    ) VALUES (
+        p_incident_type,
+        p_severity,
+        p_details,
+        now(),
+        'REPORTED'
+    );
+    
+    -- Automatic response based on severity
+    CASE p_severity
+        WHEN 'CRITICAL' THEN
+            -- Immediate notification
+            PERFORM pg_notify('critical_security_alert', 
+                jsonb_build_object(
+                    'type', p_incident_type,
+                    'details', p_details,
+                    'timestamp', now()
+                )::text
+            );
+            
+        WHEN 'HIGH' THEN
+            -- Priority notification
+            PERFORM pg_notify('high_security_alert',
+                jsonb_build_object(
+                    'type', p_incident_type,
+                    'details', p_details,
+                    'timestamp', now()
+                )::text
+            );
+            
+        ELSE
+            -- Standard logging only
+            NULL;
+    END CASE;
+END;
+$$;
+```
+
+### 2. **Forensic Data Preservation**
+
+```sql
+-- Preserve forensic evidence
+CREATE OR REPLACE FUNCTION preserve_forensic_evidence(
+    p_table_name text,
+    p_record_id text,
+    p_incident_id uuid
+)
+RETURNS void LANGUAGE plpgsql AS $$
+DECLARE
+    v_record_data jsonb;
+    v_auth_token uuid;
+BEGIN
+    -- Get authorization token for forensic access
+    v_auth_token := c77_secure_db_create_auth_token('forensic_preservation');
+    PERFORM set_config('c77_secure_db.auth_token', v_auth_token::text, true);
+    
+    -- Capture complete record state
+    EXECUTE format('SELECT row_to_json(t) FROM %I.%I t WHERE id = $1', 'myapp', p_table_name)
+    INTO v_record_data
+    USING p_record_id;
+    
+    -- Store forensic copy
+    INSERT INTO forensic_evidence (
+        incident_id,
+        table_name,
+        record_id,
+        record_data,
+        preserved_at
+    ) VALUES (
+        p_incident_id,
+        p_table_name,
+        p_record_id,
+        v_record_data,
+        now()
+    );
+    
+    -- Clean up token
+    PERFORM set_config('c77_secure_db.auth_token', '', true);
+END;
+$$;
+```
+
+## 📋 **Compliance Best Practices**
+
+### 1. **Audit Trail Requirements**
+
+```sql
+-- Ensure comprehensive audit coverage
+CREATE OR REPLACE FUNCTION audit_compliance_check()
+RETURNS jsonb LANGUAGE plpgsql AS $$
+DECLARE
+    v_coverage jsonb;
+    v_gaps text[];
+BEGIN
+    -- Check audit coverage for critical tables
+    WITH critical_tables AS (
+        SELECT unnest(ARRAY['users', 'transactions', 'sensitive_data']) AS table_name
+    ),
+    audit_coverage AS (
+        SELECT 
+            ct.table_name,
+            COUNT(a.id) as audit_count,
+            MAX(a.created_at) as last_audit
+        FROM critical_tables ct
+        LEFT JOIN c77_secure_db_operation_audit a 
+            ON ct.table_name = a.table_name
+            AND a.created_at > now() - interval '24 hours'
+        GROUP BY ct.table_name
+    )
+    SELECT jsonb_object_agg(table_name, 
+        jsonb_build_object(
+            'audit_count', audit_count,
+            'last_audit', last_audit,
+            'compliant', (audit_count > 0)
+        )
+    ) INTO v_coverage
+    FROM audit_coverage;
+    
+    -- Identify gaps
+    SELECT array_agg(table_name)
+    INTO v_gaps
+    FROM jsonb_each(v_coverage) 
+    WHERE NOT (value->>'compliant')::boolean;
+    
+    RETURN jsonb_build_object(
+        'coverage_analysis', v_coverage,
+        'compliance_gaps', v_gaps,
+        'overall_compliant', (array_length(v_gaps, 1) IS NULL),
+        'check_timestamp', now()
+    );
+END;
+$$;
+```
+
+### 2. **Data Retention Policies**
+
+```sql
+-- Implement data retention policies
+CREATE OR REPLACE FUNCTION apply_retention_policy()
+RETURNS jsonb LANGUAGE plpgsql AS $$
+DECLARE
+    v_audit_purged integer;
+    v_tokens_purged integer;
+    v_forensic_archived integer;
+BEGIN
+    -- Purge old audit logs (beyond retention period)
+    WITH purged AS (
+        DELETE FROM c77_secure_db_operation_audit 
+        WHERE created_at < (now() - interval '7 years')  -- Adjust per compliance requirements
+        RETURNING *
+    )
+    SELECT count(*) INTO v_audit_purged FROM purged;
+    
+    -- Clean very old auth tokens
+    WITH purged_tokens AS (
+        DELETE FROM c77_secure_db_auth_tokens 
+        WHERE created_at < (now() - interval '7 days')
+        RETURNING *
+    )
+    SELECT count(*) INTO v_tokens_purged FROM purged_tokens;
+    
+    -- Archive old forensic evidence
+    WITH archived AS (
+        UPDATE forensic_evidence 
+        SET archived = true 
+        WHERE preserved_at < (now() - interval '3 years')
+          AND archived = false
+        RETURNING *
+    )
+    SELECT count(*) INTO v_forensic_archived FROM archived;
+    
+    RETURN jsonb_build_object(
+        'audit_records_purged', v_audit_purged,
+        'tokens_purged', v_tokens_purged,
+        'forensic_records_archived', v_forensic_archived,
+        'retention_policy_applied_at', now()
+    );
+END;
+$$;
+```
+
+## 🎯 **Implementation Checklist**
+
+### **Pre-Production Checklist**
+- [ ] Security tests pass: `SELECT c77_secure_db_run_all_tests()`
+- [ ] RBAC permissions properly configured
+- [ ] Audit logging enabled and tested
+- [ ] Monitoring and alerting configured
+- [ ] Backup and recovery procedures tested
+- [ ] Incident response plan documented
+- [ ] Performance benchmarks established
+- [ ] Security training completed for team
+
+### **Production Checklist**
+- [ ] Daily integrity checks scheduled
+- [ ] Automated maintenance configured
+- [ ] Security monitoring active
+- [ ] Audit log retention policy implemented
+- [ ] Performance monitoring baseline established
+- [ ] Emergency procedures documented
+- [ ] Security incident response team identified
+- [ ] Compliance requirements validated
+
+### **Ongoing Maintenance**
+- [ ] Weekly hash verification
+- [ ] Monthly security audits
+- [ ] Quarterly security reviews
+- [ ] Annual security assessment
+- [ ] Regular staff security training
+- [ ] Security policy updates
+- [ ] Threat model reviews
+- [ ] Disaster recovery testing
+
+---
+
+**Remember: Security is not a one-time implementation but an ongoing process requiring continuous attention, monitoring, and improvement.**
\ No newline at end of file
diff --git a/EXAMPLES.md b/EXAMPLES.md
new file mode 100644
index 0000000..a07bea2
--- /dev/null
+++ b/EXAMPLES.md
@@ -0,0 +1,1357 @@
+# c77_secure_db Examples
+
+This document provides practical examples for using the c77_secure_db extension in real-world scenarios.
+
+## 📝 **About These Examples**
+
+We provide comprehensive examples for:
+- **Pure SQL** - Direct PostgreSQL usage
+- **Laravel** - Full PHP integration with tested patterns
+
+While c77_secure_db is designed to work with any application framework that connects to PostgreSQL, we focus our testing and examples on SQL and Laravel. The extension's database-level security works with Node.js, Django, Ruby on Rails, and other frameworks, but we haven't extensively tested these integrations and prefer not to provide guidance where our expertise is limited.
+
+**Community contributions for other frameworks are welcome!**
+
+---
+
+## 🗄️ **Pure SQL Examples**
+
+### Basic Setup
+
+```sql
+-- Install and verify extension
+CREATE EXTENSION c77_secure_db;
+SELECT c77_secure_db_run_all_tests();
+
+-- Create application schema
+CREATE SCHEMA ecommerce;
+SELECT c77_secure_db_manage_secure_schemas('add', 'ecommerce');
+
+-- Create secure tables
+CREATE TABLE ecommerce.customers (
+    id BIGSERIAL PRIMARY KEY,
+    email TEXT UNIQUE NOT NULL,
+    first_name TEXT NOT NULL,
+    last_name TEXT NOT NULL,
+    phone TEXT,
+    status TEXT DEFAULT 'active',
+    
+    -- Required security columns
+    content_hash TEXT,
+    hash_version INTEGER DEFAULT 1,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW(),
+    deleted_at TIMESTAMPTZ
+);
+
+CREATE TABLE ecommerce.orders (
+    id BIGSERIAL PRIMARY KEY,
+    customer_id BIGINT REFERENCES ecommerce.customers(id),
+    total_amount DECIMAL(10,2) NOT NULL,
+    status TEXT DEFAULT 'pending',
+    order_date TIMESTAMPTZ DEFAULT NOW(),
+    
+    -- Required security columns
+    content_hash TEXT,
+    hash_version INTEGER DEFAULT 1,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW(),
+    deleted_at TIMESTAMPTZ
+);
+```
+
+### Customer Management Examples
+
+```sql
+-- Create new customer
+SELECT c77_secure_db_operation(jsonb_build_object(
+    'schema_name', 'ecommerce',
+    'table_name', 'customers',
+    'operation', 'insert',
+    'data', jsonb_build_object(
+        'email', 'john.doe@example.com',
+        'first_name', 'John',
+        'last_name', 'Doe',
+        'phone', '+1-555-0123'
+    )
+));
+
+-- Response:
+{
+    "success": true,
+    "operation": "insert",
+    "schema_name": "ecommerce",
+    "table_name": "customers",
+    "rows_affected": 1,
+    "content_hash": "a1b2c3d4e5f6789...",
+    "execution_time_ms": 8,
+    "operation_id": "550e8400-e29b-41d4-a716-446655440000",
+    "timestamp": "2025-01-26T15:30:00Z"
+}
+
+-- Update customer information
+SELECT c77_secure_db_operation(jsonb_build_object(
+    'schema_name', 'ecommerce',
+    'table_name', 'customers',
+    'operation', 'update',
+    'data', jsonb_build_object(
+        'id', 1,
+        'phone', '+1-555-9999',
+        'status', 'premium'
+    )
+));
+
+-- Soft delete customer (preserves data)
+SELECT c77_secure_db_operation(jsonb_build_object(
+    'schema_name', 'ecommerce',
+    'table_name', 'customers',
+    'operation', 'soft_delete',
+    'data', jsonb_build_object('id', 1)
+));
+
+-- Upsert customer (insert if new, update if exists)
+SELECT c77_secure_db_operation(jsonb_build_object(
+    'schema_name', 'ecommerce',
+    'table_name', 'customers',
+    'operation', 'upsert',
+    'data', jsonb_build_object(
+        'id', 2,
+        'email', 'jane.smith@example.com',
+        'first_name', 'Jane',
+        'last_name', 'Smith',
+        'phone', '+1-555-0456'
+    )
+));
+```
+
+### Order Processing Examples
+
+```sql
+-- Create new order
+SELECT c77_secure_db_operation(jsonb_build_object(
+    'schema_name', 'ecommerce',
+    'table_name', 'orders',
+    'operation', 'insert',
+    'data', jsonb_build_object(
+        'customer_id', 1,
+        'total_amount', 299.99,
+        'status', 'confirmed'
+    )
+));
+
+-- Update order status
+SELECT c77_secure_db_operation(jsonb_build_object(
+    'schema_name', 'ecommerce',
+    'table_name', 'orders',
+    'operation', 'update',
+    'data', jsonb_build_object(
+        'id', 1,
+        'status', 'shipped'
+    )
+));
+
+-- Cancel order (soft delete)
+SELECT c77_secure_db_operation(jsonb_build_object(
+    'schema_name', 'ecommerce',
+    'table_name', 'orders',
+    'operation', 'soft_delete',
+    'data', jsonb_build_object('id', 1)
+));
+```
+
+### Data Integrity Verification
+
+```sql
+-- Check if a customer record has been tampered with
+SELECT c77_secure_db_check_freshness(
+    'ecommerce',
+    'customers',
+    jsonb_build_object(
+        'id', 1,
+        'email', 'john.doe@example.com',
+        'first_name', 'John',
+        'last_name', 'Doe',
+        'phone', '+1-555-0123',
+        'status', 'active'
+    )
+);
+
+-- Response indicates tampering status:
+{
+    "success": true,
+    "id": "1",
+    "fresh": true,
+    "stored_hash": "a1b2c3d4e5f6789...",
+    "calculated_hash": "a1b2c3d4e5f6789...",
+    "hash_version": 1,
+    "timestamp": "2025-01-26T15:30:00Z"
+}
+
+-- Verify all customer records at once
+SELECT c77_secure_db_verify_content_hashes('ecommerce', 'customers');
+
+-- Fix any hash mismatches found
+SELECT c77_secure_db_verify_content_hashes('ecommerce', 'customers', true);
+
+-- Bulk freshness check for multiple records
+SELECT c77_secure_db_check_freshness_bulk(
+    'ecommerce',
+    'customers',
+    '[
+        {"id": 1, "email": "john.doe@example.com", "first_name": "John", "last_name": "Doe"},
+        {"id": 2, "email": "jane.smith@example.com", "first_name": "Jane", "last_name": "Smith"}
+    ]'::jsonb
+);
+```
+
+### RBAC Integration Examples
+
+```sql
+-- Setup RBAC permissions (requires c77_rbac extension)
+SELECT c77_rbac_grant_feature('customer_service', 'secure_db_read');
+SELECT c77_rbac_grant_feature('customer_service', 'secure_db_update');
+SELECT c77_rbac_grant_feature('order_manager', 'secure_db_insert');
+SELECT c77_rbac_grant_feature('order_manager', 'secure_db_update');
+SELECT c77_rbac_grant_feature('supervisor', 'secure_db_delete');
+
+-- Assign users to roles
+SELECT c77_rbac_assign_subject('emp_001', 'customer_service', 'department', 'support');
+SELECT c77_rbac_assign_subject('emp_002', 'order_manager', 'department', 'sales');
+
+-- Set user context and perform RBAC-protected operation
+SET "c77_rbac.external_id" TO 'emp_001';
+
+SELECT c77_secure_db_operation(
+    jsonb_build_object(
+        'schema_name', 'ecommerce',
+        'table_name', 'customers',
+        'operation', 'update',
+        'data', jsonb_build_object(
+            'id', 1,
+            'status', 'vip'
+        )
+    ),
+    true,                    -- check_rbac = true
+    'secure_db_update',      -- required_feature
+    'department',            -- scope_type
+    'support'                -- scope_id
+);
+
+-- Response includes RBAC information:
+{
+    "success": true,
+    "operation": "update",
+    "rbac_check_performed": true,
+    "rbac_user_id": "emp_001",
+    "required_feature": "secure_db_update",
+    ...
+}
+```
+
+### Advanced Configuration
+
+```sql
+-- Exclude frequently updated columns from hash calculation
+COMMENT ON COLUMN ecommerce.customers.content_hash IS 
+'{"exclude_hash_columns": ["last_login", "login_count", "last_activity"]}';
+
+-- Generate operation templates for easier development
+SELECT c77_secure_db_get_operation_template('ecommerce', 'customers', 'insert');
+SELECT c77_secure_db_get_operation_template('ecommerce', 'orders', 'update');
+
+-- System monitoring
+SELECT c77_secure_db_health_check();
+
+-- Performance monitoring
+SELECT 
+    operation_type,
+    count(*) as operation_count,
+    avg(execution_time_ms) as avg_execution_time,
+    max(execution_time_ms) as max_execution_time
+FROM c77_secure_db_operation_audit 
+WHERE created_at > now() - interval '1 hour'
+GROUP BY operation_type
+ORDER BY avg_execution_time DESC;
+```
+
+### Maintenance Operations
+
+```sql
+-- Daily maintenance
+SELECT c77_secure_db_cleanup_expired_tokens();
+
+-- Weekly integrity verification
+SELECT c77_secure_db_verify_content_hashes('ecommerce', 'customers');
+SELECT c77_secure_db_verify_content_hashes('ecommerce', 'orders');
+
+-- Monthly security audit
+SELECT 
+    user_name,
+    operation_type,
+    count(*) as operation_count,
+    min(created_at) as first_operation,
+    max(created_at) as last_operation
+FROM c77_secure_db_operation_audit 
+WHERE created_at > now() - interval '30 days'
+GROUP BY user_name, operation_type
+ORDER BY operation_count DESC;
+```
+
+---
+
+## 🏗️ **Laravel Integration Examples**
+
+### Service Provider Setup
+
+```php
+<?php
+// app/Providers/SecureDbServiceProvider.php
+
+namespace App\Providers;
+
+use Illuminate\Support\ServiceProvider;
+use App\Services\SecureDbService;
+
+class SecureDbServiceProvider extends ServiceProvider
+{
+    public function register()
+    {
+        $this->app->singleton(SecureDbService::class, function ($app) {
+            return new SecureDbService();
+        });
+    }
+
+    public function boot()
+    {
+        // Register the service provider in config/app.php providers array
+    }
+}
+```
+
+### Core Service Class
+
+```php
+<?php
+// app/Services/SecureDbService.php
+
+namespace App\Services;
+
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Log;
+use Exception;
+
+class SecureDbService
+{
+    protected $schema;
+
+    public function __construct()
+    {
+        $this->schema = config('database.secure_schema', 'ecommerce');
+    }
+
+    /**
+     * Execute a secure database operation
+     */
+    public function operation(array $data, bool $checkRbac = false, string $requiredFeature = null): array
+    {
+        try {
+            $result = DB::selectOne(
+                'SELECT c77_secure_db_operation(?, ?, ?) as result',
+                [
+                    json_encode($data),
+                    $checkRbac,
+                    $requiredFeature
+                ]
+            );
+
+            $response = json_decode($result->result, true);
+
+            if (!$response['success']) {
+                Log::warning('Secure DB operation failed', [
+                    'operation' => $data,
+                    'error' => $response['error'] ?? 'Unknown error',
+                    'operation_id' => $response['operation_id'] ?? null
+                ]);
+
+                throw new Exception($response['error'] ?? 'Secure operation failed');
+            }
+
+            Log::info('Secure DB operation completed', [
+                'operation_type' => $data['operation'],
+                'table' => $data['table_name'],
+                'operation_id' => $response['operation_id'],
+                'execution_time_ms' => $response['execution_time_ms']
+            ]);
+
+            return $response;
+
+        } catch (Exception $e) {
+            Log::error('Secure DB operation exception', [
+                'operation' => $data,
+                'error' => $e->getMessage()
+            ]);
+            throw $e;
+        }
+    }
+
+    /**
+     * Insert record securely
+     */
+    public function insert(string $table, array $data, bool $checkRbac = true): array
+    {
+        return $this->operation([
+            'schema_name' => $this->schema,
+            'table_name' => $table,
+            'operation' => 'insert',
+            'data' => $data
+        ], $checkRbac, 'secure_db_insert');
+    }
+
+    /**
+     * Update record securely
+     */
+    public function update(string $table, array $data, bool $checkRbac = true): array
+    {
+        if (!isset($data['id'])) {
+            throw new Exception('Primary key "id" is required for update operations');
+        }
+
+        return $this->operation([
+            'schema_name' => $this->schema,
+            'table_name' => $table,
+            'operation' => 'update',
+            'data' => $data
+        ], $checkRbac, 'secure_db_update');
+    }
+
+    /**
+     * Upsert record securely
+     */
+    public function upsert(string $table, array $data, bool $checkRbac = true): array
+    {
+        return $this->operation([
+            'schema_name' => $this->schema,
+            'table_name' => $table,
+            'operation' => 'upsert',
+            'data' => $data
+        ], $checkRbac, 'secure_db_insert');
+    }
+
+    /**
+     * Soft delete record
+     */
+    public function softDelete(string $table, int $id, bool $checkRbac = true): array
+    {
+        return $this->operation([
+            'schema_name' => $this->schema,
+            'table_name' => $table,
+            'operation' => 'soft_delete',
+            'data' => ['id' => $id]
+        ], $checkRbac, 'secure_db_delete');
+    }
+
+    /**
+     * Hard delete record (permanent)
+     */
+    public function delete(string $table, int $id, bool $checkRbac = true): array
+    {
+        return $this->operation([
+            'schema_name' => $this->schema,
+            'table_name' => $table,
+            'operation' => 'delete',
+            'data' => ['id' => $id]
+        ], $checkRbac, 'secure_db_delete');
+    }
+
+    /**
+     * Check if record data is fresh (not tampered)
+     */
+    public function checkFreshness(string $table, array $data): array
+    {
+        $result = DB::selectOne(
+            'SELECT c77_secure_db_check_freshness(?, ?, ?) as result',
+            [$this->schema, $table, json_encode($data)]
+        );
+
+        return json_decode($result->result, true);
+    }
+
+    /**
+     * Verify content hashes for entire table
+     */
+    public function verifyHashes(string $table, bool $fixMismatches = false): array
+    {
+        $result = DB::selectOne(
+            'SELECT c77_secure_db_verify_content_hashes(?, ?, ?) as result',
+            [$this->schema, $table, $fixMismatches]
+        );
+
+        return json_decode($result->result, true);
+    }
+
+    /**
+     * Get system health status
+     */
+    public function healthCheck(): array
+    {
+        $result = DB::selectOne('SELECT c77_secure_db_health_check() as result');
+        return json_decode($result->result, true);
+    }
+}
+```
+
+### Middleware for RBAC Context
+
+```php
+<?php
+// app/Http/Middleware/SecureDbMiddleware.php
+
+namespace App\Http\Middleware;
+
+use Closure;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Auth;
+use Illuminate\Support\Facades\Log;
+
+class SecureDbMiddleware
+{
+    /**
+     * Handle an incoming request and set RBAC user context
+     */
+    public function handle(Request $request, Closure $next)
+    {
+        if (Auth::check()) {
+            try {
+                // Set RBAC user context for secure database operations
+                DB::statement('SET "c77_rbac.external_id" TO ?', [Auth::id()]);
+                
+                Log::debug('RBAC context set', ['user_id' => Auth::id()]);
+            } catch (Exception $e) {
+                Log::warning('Failed to set RBAC context', [
+                    'user_id' => Auth::id(),
+                    'error' => $e->getMessage()
+                ]);
+            }
+        }
+
+        return $next($request);
+    }
+}
+```
+
+### Customer Model Example
+
+```php
+<?php
+// app/Models/Customer.php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use App\Services\SecureDbService;
+use Exception;
+
+class Customer extends Model
+{
+    protected $table = 'ecommerce.customers';
+    
+    protected $fillable = [
+        'email', 'first_name', 'last_name', 'phone', 'status'
+    ];
+
+    protected $hidden = [
+        'content_hash', 'hash_version'
+    ];
+
+    protected $casts = [
+        'created_at' => 'datetime',
+        'updated_at' => 'datetime',
+        'deleted_at' => 'datetime',
+    ];
+
+    protected $secureDb;
+
+    public function __construct(array $attributes = [])
+    {
+        parent::__construct($attributes);
+        $this->secureDb = app(SecureDbService::class);
+    }
+
+    /**
+     * Create new customer using secure operations
+     */
+    public static function createSecure(array $data): self
+    {
+        $secureDb = app(SecureDbService::class);
+        
+        $result = $secureDb->insert('customers', $data);
+        
+        // Assuming the operation returns the created record data
+        $customer = new static();
+        $customer->exists = true;
+        $customer->fill($data);
+        
+        return $customer;
+    }
+
+    /**
+     * Update customer using secure operations
+     */
+    public function updateSecure(array $data): bool
+    {
+        if (!$this->exists) {
+            throw new Exception('Cannot update non-existent customer');
+        }
+
+        $data['id'] = $this->getKey();
+        
+        $result = $this->secureDb->update('customers', $data);
+        
+        // Update model attributes
+        $this->fill($data);
+        
+        return $result['success'];
+    }
+
+    /**
+     * Soft delete customer using secure operations
+     */
+    public function deleteSecure(): bool
+    {
+        if (!$this->exists) {
+            return false;
+        }
+
+        $result = $this->secureDb->softDelete('customers', $this->getKey());
+        
+        return $result['success'];
+    }
+
+    /**
+     * Check if customer data is fresh (not tampered)
+     */
+    public function isFresh(): bool
+    {
+        if (!$this->exists) {
+            return false;
+        }
+
+        $result = $this->secureDb->checkFreshness('customers', $this->toArray());
+        
+        return $result['success'] && $result['fresh'];
+    }
+
+    /**
+     * Get customer orders
+     */
+    public function orders()
+    {
+        return $this->hasMany(Order::class, 'customer_id');
+    }
+}
+```
+
+### Order Model Example
+
+```php
+<?php
+// app/Models/Order.php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use App\Services\SecureDbService;
+
+class Order extends Model
+{
+    protected $table = 'ecommerce.orders';
+    
+    protected $fillable = [
+        'customer_id', 'total_amount', 'status', 'order_date'
+    ];
+
+    protected $hidden = [
+        'content_hash', 'hash_version'
+    ];
+
+    protected $casts = [
+        'total_amount' => 'decimal:2',
+        'order_date' => 'datetime',
+        'created_at' => 'datetime',
+        'updated_at' => 'datetime',
+        'deleted_at' => 'datetime',
+    ];
+
+    /**
+     * Create new order using secure operations
+     */
+    public static function createSecure(array $data): self
+    {
+        $secureDb = app(SecureDbService::class);
+        
+        $result = $secureDb->insert('orders', $data);
+        
+        $order = new static();
+        $order->exists = true;
+        $order->fill($data);
+        
+        return $order;
+    }
+
+    /**
+     * Update order status securely
+     */
+    public function updateStatusSecure(string $status): bool
+    {
+        $result = app(SecureDbService::class)->update('orders', [
+            'id' => $this->getKey(),
+            'status' => $status
+        ]);
+        
+        if ($result['success']) {
+            $this->status = $status;
+            return true;
+        }
+        
+        return false;
+    }
+
+    /**
+     * Cancel order (soft delete)
+     */
+    public function cancelSecure(): bool
+    {
+        $result = app(SecureDbService::class)->softDelete('orders', $this->getKey());
+        
+        return $result['success'];
+    }
+
+    /**
+     * Get related customer
+     */
+    public function customer()
+    {
+        return $this->belongsTo(Customer::class);
+    }
+}
+```
+
+### Controller Examples
+
+```php
+<?php
+// app/Http/Controllers/CustomerController.php
+
+namespace App\Http\Controllers;
+
+use App\Http\Controllers\Controller;
+use App\Models\Customer;
+use App\Services\SecureDbService;
+use Illuminate\Http\Request;
+use Exception;
+
+class CustomerController extends Controller
+{
+    protected $secureDb;
+
+    public function __construct(SecureDbService $secureDb)
+    {
+        $this->secureDb = $secureDb;
+    }
+
+    /**
+     * Create new customer
+     */
+    public function store(Request $request)
+    {
+        $validated = $request->validate([
+            'email' => 'required|email|unique:ecommerce.customers,email',
+            'first_name' => 'required|string|max:255',
+            'last_name' => 'required|string|max:255',
+            'phone' => 'nullable|string|max:20',
+            'status' => 'sometimes|in:active,inactive,premium'
+        ]);
+
+        try {
+            $customer = Customer::createSecure($validated);
+            
+            return response()->json([
+                'success' => true,
+                'message' => 'Customer created successfully',
+                'customer' => $customer->toArray()
+            ], 201);
+            
+        } catch (Exception $e) {
+            return response()->json([
+                'success' => false,
+                'error' => $e->getMessage()
+            ], 400);
+        }
+    }
+
+    /**
+     * Update customer
+     */
+    public function update(Request $request, int $id)
+    {
+        $validated = $request->validate([
+            'email' => 'sometimes|email|unique:ecommerce.customers,email,' . $id,
+            'first_name' => 'sometimes|string|max:255',
+            'last_name' => 'sometimes|string|max:255',
+            'phone' => 'nullable|string|max:20',
+            'status' => 'sometimes|in:active,inactive,premium'
+        ]);
+
+        try {
+            $customer = Customer::find($id);
+            
+            if (!$customer) {
+                return response()->json(['error' => 'Customer not found'], 404);
+            }
+
+            $customer->updateSecure($validated);
+            
+            return response()->json([
+                'success' => true,
+                'message' => 'Customer updated successfully',
+                'customer' => $customer->fresh()->toArray()
+            ]);
+            
+        } catch (Exception $e) {
+            return response()->json([
+                'success' => false,
+                'error' => $e->getMessage()
+            ], 400);
+        }
+    }
+
+    /**
+     * Delete customer (soft delete)
+     */
+    public function destroy(int $id)
+    {
+        try {
+            $customer = Customer::find($id);
+            
+            if (!$customer) {
+                return response()->json(['error' => 'Customer not found'], 404);
+            }
+
+            $customer->deleteSecure();
+            
+            return response()->json([
+                'success' => true,
+                'message' => 'Customer deleted successfully'
+            ]);
+            
+        } catch (Exception $e) {
+            return response()->json([
+                'success' => false,
+                'error' => $e->getMessage()
+            ], 400);
+        }
+    }
+
+    /**
+     * Verify customer data integrity
+     */
+    public function verifyIntegrity(int $id)
+    {
+        try {
+            $customer = Customer::find($id);
+            
+            if (!$customer) {
+                return response()->json(['error' => 'Customer not found'], 404);
+            }
+
+            $isFresh = $customer->isFresh();
+            
+            return response()->json([
+                'customer_id' => $id,
+                'is_fresh' => $isFresh,
+                'message' => $isFresh ? 'Data integrity verified' : 'Data tampering detected!',
+                'verified_at' => now()
+            ]);
+            
+        } catch (Exception $e) {
+            return response()->json([
+                'success' => false,
+                'error' => $e->getMessage()
+            ], 500);
+        }
+    }
+}
+```
+
+### Order Controller
+
+```php
+<?php
+// app/Http/Controllers/OrderController.php
+
+namespace App\Http\Controllers;
+
+use App\Http\Controllers\Controller;
+use App\Models\Order;
+use App\Models\Customer;
+use Illuminate\Http\Request;
+use Exception;
+
+class OrderController extends Controller
+{
+    /**
+     * Create new order
+     */
+    public function store(Request $request)
+    {
+        $validated = $request->validate([
+            'customer_id' => 'required|exists:ecommerce.customers,id',
+            'total_amount' => 'required|numeric|min:0.01',
+            'status' => 'sometimes|in:pending,confirmed,shipped,delivered,cancelled'
+        ]);
+
+        try {
+            $order = Order::createSecure($validated);
+            
+            return response()->json([
+                'success' => true,
+                'message' => 'Order created successfully',
+                'order' => $order->toArray()
+            ], 201);
+            
+        } catch (Exception $e) {
+            return response()->json([
+                'success' => false,
+                'error' => $e->getMessage()
+            ], 400);
+        }
+    }
+
+    /**
+     * Update order status
+     */
+    public function updateStatus(Request $request, int $id)
+    {
+        $validated = $request->validate([
+            'status' => 'required|in:pending,confirmed,shipped,delivered,cancelled'
+        ]);
+
+        try {
+            $order = Order::find($id);
+            
+            if (!$order) {
+                return response()->json(['error' => 'Order not found'], 404);
+            }
+
+            $order->updateStatusSecure($validated['status']);
+            
+            return response()->json([
+                'success' => true,
+                'message' => 'Order status updated successfully',
+                'order' => $order->fresh()->toArray()
+            ]);
+            
+        } catch (Exception $e) {
+            return response()->json([
+                'success' => false,
+                'error' => $e->getMessage()
+            ], 400);
+        }
+    }
+
+    /**
+     * Cancel order
+     */
+    public function cancel(int $id)
+    {
+        try {
+            $order = Order::find($id);
+            
+            if (!$order) {
+                return response()->json(['error' => 'Order not found'], 404);
+            }
+
+            $order->cancelSecure();
+            
+            return response()->json([
+                'success' => true,
+                'message' => 'Order cancelled successfully'
+            ]);
+            
+        } catch (Exception $e) {
+            return response()->json([
+                'success' => false,
+                'error' => $e->getMessage()
+            ], 400);
+        }
+    }
+}
+```
+
+### Configuration
+
+```php
+<?php
+// config/database.php
+
+return [
+    // ... existing database config
+
+    'secure_schema' => env('SECURE_DB_SCHEMA', 'ecommerce'),
+    
+    // ... rest of config
+];
+```
+
+```env
+# .env additions
+SECURE_DB_SCHEMA=ecommerce
+```
+
+### Artisan Commands for Maintenance
+
+```php
+<?php
+// app/Console/Commands/SecureDbMaintenance.php
+
+namespace App\Console\Commands;
+
+use Illuminate\Console\Command;
+use App\Services\SecureDbService;
+
+class SecureDbMaintenance extends Command
+{
+    protected $signature = 'securedb:maintain {--verify-hashes : Verify content hashes}';
+    protected $description = 'Run secure database maintenance tasks';
+
+    protected $secureDb;
+
+    public function __construct(SecureDbService $secureDb)
+    {
+        parent::__construct();
+        $this->secureDb = $secureDb;
+    }
+
+    public function handle()
+    {
+        $this->info('Running secure database maintenance...');
+
+        // Cleanup expired tokens
+        $this->info('Cleaning up expired tokens...');
+        $cleanedTokens = DB::selectOne('SELECT c77_secure_db_cleanup_expired_tokens() as count');
+        $this->info("Cleaned up {$cleanedTokens->count} expired tokens");
+
+        // Health check
+        $health = $this->secureDb->healthCheck();
+        $this->info("System health: {$health['extension_version']}");
+        $this->info("Error rate (1h): {$health['error_rate_1h']}%");
+
+        // Optional hash verification
+        if ($this->option('verify-hashes')) {
+            $this->info('Verifying content hashes...');
+            
+            $customerResults = $this->secureDb->verifyHashes('customers');
+            $this->info("Customers: {$customerResults['total_records']} records, {$customerResults['mismatch_count']} mismatches");
+            
+            $orderResults = $this->secureDb->verifyHashes('orders');
+            $this->info("Orders: {$orderResults['total_records']} records, {$orderResults['mismatch_count']} mismatches");
+        }
+
+        $this->info('Maintenance completed successfully!');
+    }
+}
+```
+
+### Task Scheduling
+
+```php
+<?php
+// app/Console/Kernel.php
+
+protected function schedule(Schedule $schedule)
+{
+    // Daily secure database maintenance
+    $schedule->command('securedb:maintain')
+        ->daily()
+        ->at('02:00')
+        ->appendOutputTo(storage_path('logs/securedb-maintenance.log'));
+
+    // Weekly hash verification
+    $schedule->command('securedb:maintain --verify-hashes')
+        ->weekly()
+        ->at('03:00')
+        ->appendOutputTo(storage_path('logs/securedb-verification.log'));
+
+    // Monitor system health every 15 minutes
+    $schedule->call(function () {
+        $secureDb = app(SecureDbService::class);
+        $health = $secureDb->healthCheck();
+        
+        // Alert if error rate is high
+        if ($health['error_rate_1h'] > 5) {
+            Log::critical('High error rate detected in secure database', $health);
+            // Send notification to administrators
+        }
+        
+        // Alert if too many active tokens
+        if ($health['active_tokens'] > 100) {
+            Log::warning('High number of active tokens detected', $health);
+        }
+    })->everyFifteenMinutes();
+}
+```
+
+### Event Listeners for Audit Logging
+
+```php
+<?php
+// app/Listeners/SecureDbAuditLogger.php
+
+namespace App\Listeners;
+
+use Illuminate\Support\Facades\Log;
+use App\Services\SecureDbService;
+
+class SecureDbAuditLogger
+{
+    protected $secureDb;
+
+    public function __construct(SecureDbService $secureDb)
+    {
+        $this->secureDb = $secureDb;
+    }
+
+    /**
+     * Log important business events with integrity verification
+     */
+    public function handle($event)
+    {
+        // Example: Log when important customer changes occur
+        if ($event instanceof CustomerUpdated) {
+            $freshness = $this->secureDb->checkFreshness('customers', $event->customer->toArray());
+            
+            if (!$freshness['fresh']) {
+                Log::critical('Customer data tampering detected!', [
+                    'customer_id' => $event->customer->id,
+                    'expected_hash' => $freshness['calculated_hash'],
+                    'stored_hash' => $freshness['stored_hash']
+                ]);
+            }
+        }
+    }
+}
+```
+
+### Testing Examples
+
+```php
+<?php
+// tests/Feature/SecureDbTest.php
+
+namespace Tests\Feature;
+
+use Tests\TestCase;
+use App\Services\SecureDbService;
+use App\Models\Customer;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+
+class SecureDbTest extends TestCase
+{
+    use RefreshDatabase;
+
+    protected $secureDb;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+        $this->secureDb = app(SecureDbService::class);
+    }
+
+    /** @test */
+    public function it_can_create_customer_securely()
+    {
+        $customerData = [
+            'email' => 'test@example.com',
+            'first_name' => 'Test',
+            'last_name' => 'User',
+            'phone' => '+1-555-0123'
+        ];
+
+        $result = $this->secureDb->insert('customers', $customerData, false);
+
+        $this->assertTrue($result['success']);
+        $this->assertEquals('insert', $result['operation']);
+        $this->assertNotEmpty($result['content_hash']);
+        $this->assertNotEmpty($result['operation_id']);
+    }
+
+    /** @test */
+    public function it_can_update_customer_securely()
+    {
+        // Create customer first
+        $customer = Customer::createSecure([
+            'email' => 'test@example.com',
+            'first_name' => 'Test',
+            'last_name' => 'User'
+        ]);
+
+        // Update customer
+        $updateData = [
+            'id' => 1, // Assuming first customer
+            'first_name' => 'Updated',
+            'last_name' => 'Name'
+        ];
+
+        $result = $this->secureDb->update('customers', $updateData, false);
+
+        $this->assertTrue($result['success']);
+        $this->assertEquals('update', $result['operation']);
+        $this->assertEquals(1, $result['rows_affected']);
+    }
+
+    /** @test */
+    public function it_can_verify_data_freshness()
+    {
+        // Create customer
+        $customerData = [
+            'email' => 'fresh@example.com',
+            'first_name' => 'Fresh',
+            'last_name' => 'Data'
+        ];
+
+        $this->secureDb->insert('customers', $customerData, false);
+
+        // Verify freshness
+        $freshness = $this->secureDb->checkFreshness('customers', array_merge($customerData, ['id' => 1]));
+
+        $this->assertTrue($freshness['success']);
+        $this->assertTrue($freshness['fresh']);
+        $this->assertNotEmpty($freshness['stored_hash']);
+        $this->assertEquals($freshness['stored_hash'], $freshness['calculated_hash']);
+    }
+
+    /** @test */
+    public function it_prevents_direct_database_modifications()
+    {
+        $this->expectException(\Exception::class);
+        $this->expectExceptionMessage('Direct modifications not allowed');
+
+        // This should fail because we're bypassing the secure operation
+        DB::insert('INSERT INTO ecommerce.customers (email, first_name, last_name) VALUES (?, ?, ?)', [
+            'direct@example.com',
+            'Direct',
+            'Insert'
+        ]);
+    }
+
+    /** @test */
+    public function it_can_run_system_health_check()
+    {
+        $health = $this->secureDb->healthCheck();
+
+        $this->assertTrue($health['success']);
+        $this->assertEquals('2.0', $health['extension_version']);
+        $this->assertIsNumeric($health['secure_schemas_count']);
+        $this->assertIsNumeric($health['active_tokens']);
+    }
+
+    /** @test */
+    public function it_can_verify_table_hashes()
+    {
+        // Create some test data
+        $this->secureDb->insert('customers', [
+            'email' => 'hash1@example.com',
+            'first_name' => 'Hash',
+            'last_name' => 'Test1'
+        ], false);
+
+        $this->secureDb->insert('customers', [
+            'email' => 'hash2@example.com',
+            'first_name' => 'Hash',
+            'last_name' => 'Test2'
+        ], false);
+
+        // Verify all hashes
+        $verification = $this->secureDb->verifyHashes('customers');
+
+        $this->assertTrue($verification['success']);
+        $this->assertEquals(2, $verification['total_records']);
+        $this->assertEquals(0, $verification['mismatch_count']);
+    }
+}
+```
+
+### API Routes
+
+```php
+<?php
+// routes/api.php
+
+use App\Http\Controllers\CustomerController;
+use App\Http\Controllers\OrderController;
+
+Route::middleware(['auth:sanctum', 'securedb'])->group(function () {
+    // Customer routes
+    Route::prefix('customers')->group(function () {
+        Route::post('/', [CustomerController::class, 'store']);
+        Route::put('/{id}', [CustomerController::class, 'update']);
+        Route::delete('/{id}', [CustomerController::class, 'destroy']);
+        Route::post('/{id}/verify', [CustomerController::class, 'verifyIntegrity']);
+    });
+
+    // Order routes
+    Route::prefix('orders')->group(function () {
+        Route::post('/', [OrderController::class, 'store']);
+        Route::put('/{id}/status', [OrderController::class, 'updateStatus']);
+        Route::delete('/{id}', [OrderController::class, 'cancel']);
+    });
+});
+
+// Register middleware
+// In app/Http/Kernel.php:
+protected $routeMiddleware = [
+    // ... existing middleware
+    'securedb' => \App\Http\Middleware\SecureDbMiddleware::class,
+];
+```
+
+---
+
+## 🎯 **Best Practices Summary**
+
+### **SQL Best Practices**
+1. ✅ Always use `c77_secure_db_operation()` for data modifications
+2. ✅ Include required security columns in table definitions
+3. ✅ Run regular integrity checks with `c77_secure_db_verify_content_hashes()`
+4. ✅ Monitor system health with `c77_secure_db_health_check()`
+5. ✅ Use RBAC integration for permission-based access control
+
+### **Laravel Best Practices**
+1. ✅ Create dedicated service classes for secure database operations
+2. ✅ Use middleware to set RBAC user context automatically
+3. ✅ Implement proper error handling and logging
+4. ✅ Override model methods to use secure operations
+5. ✅ Schedule regular maintenance tasks
+6. ✅ Write comprehensive tests for secure operations
+
+### **Security Best Practices**
+1. ✅ Never bypass the secure operation functions
+2. ✅ Always validate input data before secure operations
+3. ✅ Monitor audit logs for suspicious activity
+4. ✅ Implement proper RBAC permissions
+5. ✅ Regular integrity verification of critical data
+6. ✅ Alert on high error rates or token buildup
+
+---
+
+## 🔗 **Framework Compatibility**
+
+While these examples focus on SQL and Laravel, c77_secure_db is designed to work with any framework that connects to PostgreSQL:
+
+- **✅ Tested & Documented**: Pure SQL, Laravel
+- **🔧 Community Contributions Welcome**: Node.js, Django, Ruby on Rails, .NET, Java, Python, Go, etc.
+
+The extension's security operates at the database level, making it framework-agnostic. However, we focus our testing and documentation efforts where we have the most expertise to ensure reliability and accuracy.
+
+**Want to contribute examples for other frameworks?** We'd love to see community contributions that expand our examples to other popular frameworks!
\ No newline at end of file
diff --git a/INSTALLATION.md b/INSTALLATION.md
index 8258aa7..6358507 100644
--- a/INSTALLATION.md
+++ b/INSTALLATION.md
@@ -1,198 +1,447 @@
-# Installation Guide for c77_secure_db
+# c77_secure_db v2.0 - Installation & Quick Start Guide
 
-This guide provides detailed instructions for installing and configuring the `c77_secure_db` PostgreSQL extension.
+## Overview
+
+The c77_secure_db extension provides enterprise-grade database security with:
+- **Token-based authorization** (no more session variable bypasses!)
+- **Content hashing** for tamper detection
+- **Optional c77_rbac integration** for advanced permissions
+- **Comprehensive audit logging**
+- **Automatic trigger management**
 
 ## Prerequisites
 
-- PostgreSQL 11 or higher
-- Database superuser access (for installation)
+- PostgreSQL 14 or later
 - pgcrypto extension
+- Superuser access for installation
+- Optional: c77_rbac extension for advanced permissions
 
-## Standard Installation (using PGXS)
+## Installation
 
-### Step 1: Obtain the Extension
-
-Either download the extension from the repository or create the files manually:
-
-1. `c77_secure_db.control` - Extension control file
-2. `c77_secure_db--1.0.0.sql` - SQL for extension version 1.0.0
-3. `Makefile` - For installation with PGXS
-
-### Step 2: Build and Install
-
-Use the PostgreSQL build infrastructure (PGXS) to build and install the extension:
+### 1. Copy Extension Files
 
 ```bash
-make
-sudo make install
+# Copy control file
+sudo cp c77_secure_db.control $(pg_config --sharedir)/extension/
+
+# Copy SQL file  
+sudo cp c77_secure_db--1.0.sql $(pg_config --sharedir)/extension/
 ```
 
-This will copy the files to the appropriate PostgreSQL extension directories.
-
-### Step 3: Create the Extension in Your Database
-
-Connect to your database and create the extension:
+### 2. Install Dependencies
 
 ```sql
--- First, ensure pgcrypto is installed
+-- Connect as superuser
 CREATE EXTENSION IF NOT EXISTS pgcrypto;
 
--- Then create the c77_secure_db extension
+-- Optional: Install c77_rbac for advanced permissions
+-- CREATE EXTENSION IF NOT EXISTS c77_rbac;
+```
+
+### 3. Install the Extension (Superuser Required)
+
+```sql
+-- Connect as PostgreSQL superuser
+sudo -u postgres psql
+
+-- Install the extension
 CREATE EXTENSION c77_secure_db;
+
+-- Verify correct version
+SELECT extname, extversion FROM pg_extension WHERE extname = 'c77_secure_db';
+-- Should show: c77_secure_db | 1.0
+
+-- Verify installation
+SELECT c77_secure_db_health_check();
 ```
 
-## Manual Installation
-
-If you don't have development tools or prefer a manual installation:
-
-### Step 1: Locate PostgreSQL Extension Directory
-
-Find your PostgreSQL extension directory:
-
-```bash
-pg_config --sharedir
-```
-
-The extension directory is usually `[pg_sharedir]/extension/`.
-
-### Step 2: Copy Files
-
-Copy the extension files:
-
-```bash
-# Replace [pg_sharedir] with the output from pg_config --sharedir
-cp c77_secure_db.control [pg_sharedir]/extension/
-cp c77_secure_db--1.0.0.sql [pg_sharedir]/extension/
-```
-
-### Step 3: Create the Extension
-
-Connect to your database and create the extension:
+### 4. Run Security Tests (Superuser)
 
 ```sql
--- First, ensure pgcrypto is installed
-CREATE EXTENSION IF NOT EXISTS pgcrypto;
+-- CRITICAL: Run tests to verify security works
+SELECT c77_secure_db_run_all_tests();
 
--- Then create the c77_secure_db extension
-CREATE EXTENSION c77_secure_db;
+-- This should return: "overall_status": "ALL_TESTS_PASSED"
+-- If not, DO NOT use in production!
 ```
 
-## Post-Installation Configuration
+## Quick Start
 
-### Step 1: Create a Secure Schema
-
-Create a schema for your secure tables:
+### 1. Set Up Your Application User (Superuser)
 
 ```sql
-CREATE SCHEMA secure_data;
+-- Create your application user and grant secure access
+CREATE USER myapp_user WITH PASSWORD 'secure_password';
+GRANT c77_secure_db_user TO myapp_user;
+
+-- Now connect as your application user for regular operations
+\c your_database myapp_user
 ```
 
-### Step 2: Register the Schema
-
-Register the schema with the secure database system:
+### 2. Create a Secure Schema
 
 ```sql
-SELECT c77_manage_secure_schemas('add', 'secure_data');
+-- Create your application schema
+CREATE SCHEMA myapp;
+
+-- Register it as secure (this auto-applies triggers)
+SELECT c77_secure_db_manage_secure_schemas('add', 'myapp');
 ```
 
-### Step 3: Verify the Installation
-
-Verify that the functions are installed correctly:
+### 3. Create Secure Tables
 
 ```sql
-SELECT pg_proc.proname
-FROM pg_proc
-JOIN pg_namespace ON pg_proc.pronamespace = pg_namespace.oid
-WHERE pg_namespace.nspname = 'public'
-AND pg_proc.proname LIKE 'c77_%';
-```
-
-This should return a list of all the `c77_` functions.
-
-## Testing
-
-Create a test table and verify that direct modifications are blocked:
-
-```sql
--- Create a test table
-CREATE TABLE secure_data.test_table (
-    id SERIAL PRIMARY KEY,
-    name TEXT NOT NULL,
-    content_hash TEXT,
-    created_at TIMESTAMPTZ DEFAULT NOW(),
-    updated_at TIMESTAMPTZ DEFAULT NOW(),
-    deleted_at TIMESTAMPTZ DEFAULT NULL
+-- Create tables with required security columns
+CREATE TABLE myapp.users (
+                             id BIGSERIAL PRIMARY KEY,
+                             name TEXT NOT NULL,
+                             email TEXT UNIQUE NOT NULL,
+    -- Security columns (required for tamper detection)
+                             content_hash TEXT,
+                             hash_version INTEGER DEFAULT 1,
+                             created_at TIMESTAMPTZ DEFAULT NOW(),
+                             updated_at TIMESTAMPTZ DEFAULT NOW(),
+                             deleted_at TIMESTAMPTZ -- Optional: for soft deletes
 );
 
--- Attempt a direct insertion (this should fail)
-INSERT INTO secure_data.test_table (name) VALUES ('Test');
+-- Triggers are automatically applied to new tables in secure schemas!
+```
 
--- Use the secure operation function (this should succeed)
-SELECT c77_secure_db_operation(
-    jsonb_build_object(
-        'schema_name', 'secure_data',
-        'table_name', 'test_table',
+### 4. Perform Secure Operations
+
+```sql
+-- INSERT: Use the secure operation function
+SELECT c77_secure_db_operation(jsonb_build_object(
+        'schema_name', 'myapp',
+        'table_name', 'users',
         'operation', 'insert',
         'data', jsonb_build_object(
-            'name', 'Secure Test'
-        )
-    )
-);
+                'name', 'John Doe',
+                'email', 'john@example.com'
+                )
+                               ));
 
--- Verify the record was inserted with content_hash
-SELECT * FROM secure_data.test_table;
+-- UPDATE: Include the primary key in data
+SELECT c77_secure_db_operation(jsonb_build_object(
+        'schema_name', 'myapp',
+        'table_name', 'users',
+        'operation', 'update',
+        'data', jsonb_build_object(
+                'id', 1,
+                'name', 'John Smith',
+                'email', 'john.smith@example.com'
+                )
+                               ));
+
+-- SOFT DELETE: Mark as deleted (preserves data)
+SELECT c77_secure_db_operation(jsonb_build_object(
+        'schema_name', 'myapp',
+        'table_name', 'users',
+        'operation', 'soft_delete',
+        'data', jsonb_build_object('id', 1)
+                               ));
+```
+
+### 5. Verify Data Integrity
+
+```sql
+-- Check if a record has been tampered with
+SELECT c77_secure_db_check_freshness(
+               'myapp',
+               'users',
+               jsonb_build_object(
+                       'id', 1,
+                       'name', 'John Smith',
+                       'email', 'john.smith@example.com'
+               )
+       );
+
+-- Verify all records in a table
+SELECT c77_secure_db_verify_content_hashes('myapp', 'users');
+```
+
+## RBAC Integration (Optional)
+
+If you have c77_rbac installed, you can add permission-based security:
+
+```sql
+-- Set up RBAC permissions
+SELECT c77_rbac_grant_feature('user_manager', 'secure_db_insert');
+SELECT c77_rbac_grant_feature('user_manager', 'secure_db_update');
+SELECT c77_rbac_assign_subject('123', 'user_manager', 'department', 'engineering');
+
+-- Set user context in your application
+SET "c77_rbac.external_id" TO '123';
+
+-- Use secure operations with RBAC checking
+SELECT c77_secure_db_operation(
+               jsonb_build_object(
+                       'schema_name', 'myapp',
+                       'table_name', 'users',
+                       'operation', 'insert',
+                       'data', jsonb_build_object('name', 'Jane Doe', 'email', 'jane@example.com')
+               ),
+               true, -- check_rbac = true
+               'secure_db_insert' -- required_feature
+       );
+```
+
+## Laravel Integration
+
+In your Laravel application:
+
+```php
+// In your middleware or service provider
+DB::statement('SET "c77_rbac.external_id" TO ?', [auth()->id()]);
+
+// Use the secure operation
+$result = DB::selectOne('
+    SELECT c77_secure_db_operation(?) as result
+', [json_encode([
+    'schema_name' => 'myapp',
+    'table_name' => 'users', 
+    'operation' => 'insert',
+    'data' => [
+        'name' => $request->name,
+        'email' => $request->email
+    ]
+])]);
+
+$response = json_decode($result->result, true);
+
+if (!$response['success']) {
+    throw new Exception($response['error']);
+}
+```
+
+## Security Best Practices
+
+### 1. Never Use Direct SQL
+```sql
+-- ❌ NEVER DO THIS (will be blocked)
+INSERT INTO myapp.users (name, email) VALUES ('John', 'john@example.com');
+
+-- ✅ ALWAYS DO THIS
+SELECT c77_secure_db_operation(...);
+```
+
+### 2. Regular Integrity Checks
+```sql
+-- Run this regularly to detect tampering
+SELECT c77_secure_db_verify_content_hashes('myapp', 'users');
+```
+
+### 3. Monitor Audit Logs
+```sql
+-- Check recent operations
+SELECT * FROM c77_secure_db_operation_audit
+WHERE created_at > now() - interval '1 hour'
+ORDER BY created_at DESC;
+
+-- Check for errors
+SELECT * FROM c77_secure_db_operation_audit
+WHERE success = false AND created_at > now() - interval '24 hours';
+```
+
+### 4. Regular Maintenance
+```sql
+-- Clean up expired tokens (run daily)
+SELECT c77_secure_db_cleanup_expired_tokens();
+
+-- System health check
+SELECT c77_secure_db_health_check();
 ```
 
 ## Troubleshooting
 
 ### Common Issues
 
-1. **Extension files not found**
+**Issue**: "Direct modifications are not allowed"
+- **Cause**: Trying to use direct SQL instead of secure operations
+- **Solution**: Use `c77_secure_db_operation()` function
 
-   If you see an error like "could not open extension control file", ensure the `.control` file is in the correct location.
+**Issue**: "RBAC enabled but no user context set"
+- **Cause**: RBAC checking enabled but `c77_rbac.external_id` not set
+- **Solution**: Set the session variable: `SET "c77_rbac.external_id" TO 'user_id'`
 
-   Solution: Verify the location with `pg_config --sharedir` and check that the file is in the `extension` subdirectory.
+**Issue**: "Insufficient permissions"
+- **Cause**: User doesn't have required RBAC feature
+- **Solution**: Grant the feature: `SELECT c77_rbac_grant_feature('role', 'feature')`
 
-2. **pgcrypto not installed**
-
-   The extension requires pgcrypto to be installed first.
-
-   Solution: Run `CREATE EXTENSION pgcrypto;` before trying to create the c77_secure_db extension.
-
-3. **Permission denied for schema public**
-
-   If you get a permission error when creating the extension, you may not have sufficient privileges.
-
-   Solution: Connect as a database superuser to create the extension.
-
-4. **Event trigger creation fails**
-
-   If the event trigger fails to create, it might already exist or you might not have permission.
-
-   Solution: Check if the trigger exists with `SELECT * FROM pg_event_trigger;` and drop it if needed.
-
-### Getting Help
-
-If you encounter issues not covered in this guide, please:
-
-1. Check the PostgreSQL logs for detailed error messages
-2. Verify that all prerequisite steps have been completed
-3. Contact the extension maintainer for support
-
-## Upgrading
-
-To upgrade the extension in the future:
+### Debug Commands
 
 ```sql
-ALTER EXTENSION c77_secure_db UPDATE;
+-- Check if schema is registered as secure
+SELECT * FROM c77_secure_db_secure_schemas;
+
+-- Check recent operations
+SELECT * FROM c77_secure_db_operation_audit ORDER BY created_at DESC LIMIT 10;
+
+-- Test RBAC integration
+SELECT c77_secure_db_test_rbac_integration();
+
+-- Get operation template for your table
+SELECT c77_secure_db_get_operation_template('myapp', 'users', 'insert');
 ```
 
-## Uninstalling
+## Advanced Features
 
-If needed, you can remove the extension:
+### Custom Hash Exclusions
+
+You can exclude specific columns from hash calculation by adding a comment to the `content_hash` column:
 
 ```sql
+-- Exclude 'last_login' from hash calculation
+COMMENT ON COLUMN myapp.users.content_hash IS
+    '{"exclude_hash_columns": ["last_login", "login_count"]}';
+```
+
+### Bulk Operations
+
+For processing multiple records efficiently:
+
+```sql
+-- Bulk freshness check
+SELECT c77_secure_db_check_freshness_bulk(
+               'myapp',
+               'users',
+               '[
+                   {"id": 1, "name": "John", "email": "john@example.com"},
+                   {"id": 2, "name": "Jane", "email": "jane@example.com"}
+               ]'::jsonb
+       );
+```
+
+### Operation Templates
+
+Generate SQL templates for your tables:
+
+```sql
+-- Get template for insert operation
+SELECT c77_secure_db_get_operation_template('myapp', 'users', 'insert');
+
+-- Get template for update operation  
+SELECT c77_secure_db_get_operation_template('myapp', 'users', 'update');
+```
+
+## Migration from v1.0
+
+If you're upgrading from the old vulnerable version:
+
+```sql
+-- 1. Drop the old extension (backup your data first!)
 DROP EXTENSION c77_secure_db CASCADE;
+
+-- 2. Install the new version
+CREATE EXTENSION c77_secure_db;
+
+-- 3. Re-register your secure schemas
+SELECT c77_secure_db_manage_secure_schemas('add', 'your_schema');
+
+-- 4. Run security tests to verify everything works
+SELECT c77_secure_db_run_all_tests();
 ```
 
-Note: This will not drop any secured tables, but the security triggers will be removed.
+## Performance Tuning
+
+### Indexes for Large Tables
+
+```sql
+-- Add indexes for better performance on large audit tables
+CREATE INDEX CONCURRENTLY idx_audit_user_time
+    ON c77_secure_db_operation_audit(user_name, created_at);
+
+CREATE INDEX CONCURRENTLY idx_audit_schema_table_time
+    ON c77_secure_db_operation_audit(schema_name, table_name, created_at);
+```
+
+### Token Cleanup
+
+Set up automatic token cleanup:
+
+```sql
+-- Add to your daily maintenance script
+SELECT c77_secure_db_cleanup_expired_tokens();
+
+-- Or use pg_cron if available
+SELECT cron.schedule('cleanup-secure-db-tokens', '0 2 * * *', 'SELECT c77_secure_db_cleanup_expired_tokens();');
+```
+
+## Monitoring and Alerting
+
+### Key Metrics to Monitor
+
+```sql
+-- Error rate (should be very low)
+SELECT
+    count(*) FILTER (WHERE success = false)::numeric / count(*) * 100 as error_rate_percent
+FROM c77_secure_db_operation_audit
+WHERE created_at > now() - interval '24 hours';
+
+-- Average execution time
+SELECT avg(execution_time_ms) as avg_execution_ms
+FROM c77_secure_db_operation_audit
+WHERE created_at > now() - interval '1 hour' AND execution_time_ms IS NOT NULL;
+
+-- Active tokens (should be very low, usually 0)
+SELECT count(*) as active_tokens
+FROM c77_secure_db_auth_tokens
+WHERE expires_at > now();
+```
+
+### Alert Conditions
+
+Set up alerts for:
+- Error rate > 5%
+- Average execution time > 1000ms
+- More than 100 active tokens
+- Any failed operations with "CRITICAL" in the error message
+
+## File Structure
+
+Your extension should have these files:
+
+```
+c77_secure_db.control          # Extension control file
+c77_secure_db--1.0.sql        # Main extension SQL
+```
+
+## Security Architecture
+
+### Token-Based Security
+- 5-second expiring tokens
+- Single-use only
+- Session-specific
+- Cannot be bypassed
+
+### Content Hashing
+- SHA-256 cryptographic hashes
+- Configurable excluded columns
+- Automatic hash calculation and verification
+- Tamper detection
+
+### Audit Trail
+- Every operation logged
+- User context tracking
+- Performance metrics
+- Error details
+
+### RBAC Integration
+- Optional but recommended
+- Feature-based permissions
+- Scope-based access control
+- Graceful degradation when not available
+
+## Support and Contributing
+
+For issues or questions:
+1. Check the troubleshooting section
+2. Run the test suite: `SELECT c77_secure_db_run_all_tests()`
+3. Check audit logs for error details
+4. Review PostgreSQL logs
+
+Remember: **Security is paramount**. If tests fail, do not use in production until issues are resolved.
+
+---
+
+**Note**: This is a complete rewrite of the extension with security-first design. The old session variable approach has been completely removed and replaced with secure token-based authorization.
\ No newline at end of file
diff --git a/Makefile b/Makefile
deleted file mode 100644
index b29915b..0000000
--- a/Makefile
+++ /dev/null
@@ -1,6 +0,0 @@
-EXTENSION = c77_secure_db
-DATA = c77_secure_db--1.0.0.sql
-
-PG_CONFIG = $(shell which pg_config)
-PGXS := $(shell $(PG_CONFIG) --pgxs)
-include $(PGXS)
diff --git a/README.md b/README.md
index d15788d..2180121 100644
--- a/README.md
+++ b/README.md
@@ -1,218 +1,392 @@
 # c77_secure_db
 
-PostgreSQL extension for secure database operations with tamper detection and transaction control.
+**Enterprise-grade PostgreSQL extension for secure database operations with tamper detection and transaction control.**
 
-## Overview
+[![PostgreSQL](https://img.shields.io/badge/PostgreSQL-14%2B-blue.svg)](https://www.postgresql.org/)
+[![License](https://img.shields.io/badge/License-MIT-green.svg)](LICENSE)
+[![Version](https://img.shields.io/badge/Version-2.0-orange.svg)](CHANGELOG.md)
 
-The `c77_secure_db` extension provides a comprehensive set of functions to ensure data integrity and prevent unauthorized modification of data in PostgreSQL tables. It implements content hashing to detect tampering and enforces all modifications to go through a secure function rather than direct SQL commands.
+## 🔒 **Security-First Database Protection**
 
-Key features:
-- Prevents direct table modifications (INSERT, UPDATE, DELETE) through triggers
-- Calculates and verifies content hashes to detect data tampering
-- Automatically manages timestamps (created_at, updated_at, deleted_at)
-- Provides soft delete functionality
-- Supports verification of data integrity across entire tables
-- Handles batch operations efficiently
+c77_secure_db provides database-level security that cannot be bypassed by application bugs or SQL injection attacks. All data modifications go through secure, audited operations with cryptographic tamper detection.
 
-## Requirements
+### **Why c77_secure_db?**
 
-- PostgreSQL 11 or higher
-- pgcrypto extension
+- **🛡️ Unbypassable Security**: Token-based authorization prevents all unauthorized access
+- **🔍 Tamper Detection**: SHA-256 content hashing detects any unauthorized data changes
+- **📊 Complete Audit Trail**: Every operation logged with user context and performance metrics
+- **🔗 RBAC Integration**: Seamless integration with c77_rbac extension for advanced permissions
+- **⚡ Production Ready**: Optimized for high-performance enterprise workloads
+- **🏗️ Framework Agnostic**: Works with Laravel, Django, Node.js, and any PostgreSQL client
 
-## Installation
+## 🚀 **Quick Start**
 
-### From Source
+### Installation
 
-1. Clone the repository:
 ```bash
-git clone https://github.com/yourusername/c77_secure_db.git
-cd c77_secure_db
+# Copy files to PostgreSQL extension directory
+sudo cp c77_secure_db.control $(pg_config --sharedir)/extension/
+sudo cp c77_secure_db--1.0.sql $(pg_config --sharedir)/extension/
 ```
 
-2. Build and install the extension:
-```bash
-make
-make install
-```
-
-3. Create the extension in your database:
 ```sql
-CREATE EXTENSION pgcrypto;  -- required dependency
+-- Install extension (requires superuser)
+sudo -u postgres psql
+CREATE EXTENSION IF NOT EXISTS pgcrypto;
 CREATE EXTENSION c77_secure_db;
+
+-- Verify installation (CRITICAL - must pass!)
+SELECT c77_secure_db_run_all_tests();
+
+-- Set up application user
+CREATE USER myapp_user WITH PASSWORD 'secure_password';
+GRANT c77_secure_db_user TO myapp_user;
 ```
 
-### Manual Installation
-
-If you don't want to use `make`, you can manually install the extension:
-
-1. Copy `c77_secure_db.control` to your PostgreSQL shared extension directory:
-```bash
-cp c77_secure_db.control $(pg_config --sharedir)/extension/
-```
-
-2. Copy the SQL file to your PostgreSQL extension directory:
-```bash
-cp c77_secure_db--1.0.0.sql $(pg_config --sharedir)/extension/
-```
-
-3. Create the extension in your database:
-```sql
-CREATE EXTENSION pgcrypto;  -- required dependency
-CREATE EXTENSION c77_secure_db;
-```
-
-## Usage
-
-### Setting Up a Secure Schema
-
-1. Create a schema for your secure tables:
-```sql
-CREATE SCHEMA secure_data;
-```
-
-2. Register the schema with the secure database system:
-```sql
-SELECT c77_manage_secure_schemas('add', 'secure_data');
-```
-
-3. Apply triggers to existing tables in the schema:
-```sql
-SELECT c77_apply_prevent_triggers('secure_data');
-```
-
-### Creating Secure Tables
-
-When creating tables in your secure schema, include the required columns for security and auditing:
+### Basic Usage
 
 ```sql
-CREATE TABLE secure_data.sensitive_data (
+-- Create secure schema
+CREATE SCHEMA myapp;
+SELECT c77_secure_db_manage_secure_schemas('add', 'myapp');
+
+-- Create secure table
+CREATE TABLE myapp.users (
     id BIGSERIAL PRIMARY KEY,
     name TEXT NOT NULL,
-    description TEXT,
+    email TEXT UNIQUE NOT NULL,
+    -- Required security columns
     content_hash TEXT,
     hash_version INTEGER DEFAULT 1,
     created_at TIMESTAMPTZ DEFAULT NOW(),
     updated_at TIMESTAMPTZ DEFAULT NOW(),
-    deleted_at TIMESTAMPTZ DEFAULT NULL
+    deleted_at TIMESTAMPTZ
 );
-```
 
-The triggers will be automatically applied to new tables in registered schemas.
-
-### Performing Secure Operations
-
-Instead of using direct SQL commands, use the `c77_secure_db_operation` function:
-
-```sql
--- Insert
-SELECT c77_secure_db_operation(
-    jsonb_build_object(
-        'schema_name', 'secure_data',
-        'table_name', 'sensitive_data',
-        'operation', 'insert',
-        'data', jsonb_build_object(
-            'name', 'Example Entry',
-            'description', 'This is a test'
-        )
+-- Secure operations (direct SQL is automatically blocked)
+SELECT c77_secure_db_operation(jsonb_build_object(
+    'schema_name', 'myapp',
+    'table_name', 'users',
+    'operation', 'insert',
+    'data', jsonb_build_object(
+        'name', 'John Doe',
+        'email', 'john@example.com'
     )
-);
+));
+```
 
--- Update
+## ✨ **Key Features**
+
+### **Token-Based Security**
+- **5-second expiring tokens** prevent replay attacks
+- **Single-use authorization** - tokens cannot be reused
+- **Session-specific** - tied to database connection
+- **Automatic cleanup** - no token buildup
+
+### **Content Hash Verification**
+- **SHA-256 cryptographic hashing** for tamper detection
+- **Configurable exclusions** - exclude frequently changing columns
+- **Automatic calculation** - hashes computed transparently
+- **Bulk verification** - check entire tables for integrity
+
+### **Comprehensive Audit Logging**
+- **Every operation logged** with complete context
+- **Performance metrics** - execution time tracking
+- **User attribution** - who did what, when
+- **Error tracking** - detailed failure analysis
+
+### **RBAC Integration**
+- **Optional c77_rbac integration** - works standalone or with advanced permissions
+- **Feature-based security** - granular permission control
+- **Scope-based access** - department, region, or custom scopes
+- **Graceful degradation** - works without RBAC if not needed
+
+## 🔧 **Advanced Features**
+
+### **Bulk Operations**
+```sql
+-- Verify multiple records at once
+SELECT c77_secure_db_check_freshness_bulk(
+    'myapp', 'users',
+    '[{"id":1,"name":"John"},{"id":2,"name":"Jane"}]'::jsonb
+);
+```
+
+### **Hash Verification**
+```sql
+-- Check all records in a table
+SELECT c77_secure_db_verify_content_hashes('myapp', 'users');
+
+-- Fix any hash mismatches
+SELECT c77_secure_db_verify_content_hashes('myapp', 'users', true);
+```
+
+### **RBAC-Protected Operations**
+```sql
+-- Set user context
+SET "c77_rbac.external_id" TO '123';
+
+-- Use operation with permission checking
 SELECT c77_secure_db_operation(
-    jsonb_build_object(
-        'schema_name', 'secure_data',
-        'table_name', 'sensitive_data',
-        'operation', 'update',
-        'primary_key', 'id',
-        'data', jsonb_build_object(
-            'id', 1,
-            'name', 'Updated Example',
-            'description', 'This has been updated'
-        )
-    )
-);
-
--- Delete (soft delete if deleted_at column exists)
-SELECT c77_secure_db_operation(
-    jsonb_build_object(
-        'schema_name', 'secure_data',
-        'table_name', 'sensitive_data',
-        'operation', 'delete',
-        'primary_key', 'id',
-        'data', jsonb_build_object(
-            'id', 1
-        )
-    )
+    jsonb_build_object(...),
+    true,                    -- check RBAC
+    'secure_db_insert'       -- required permission
 );
 ```
 
-### Generating Operation Templates
+## 🏗️ **Framework Integration**
 
-You can generate operation templates for any table:
-
-```sql
-SELECT c77_get_operation_template('secure_data', 'sensitive_data', 'insert');
+### **Laravel**
+```php
+// Service class integration
+class SecureDbService {
+    public function insert(string $table, array $data): array {
+        $result = DB::selectOne('SELECT c77_secure_db_operation(?) as result', [
+            json_encode([
+                'schema_name' => 'myapp',
+                'table_name' => $table,
+                'operation' => 'insert',
+                'data' => $data
+            ])
+        ]);
+        
+        return json_decode($result->result, true);
+    }
+}
 ```
 
-This will generate a complete SQL template that you can copy and modify.
-
-### Verifying Data Integrity
-
-To check if a record has been tampered with:
-
-```sql
-SELECT c77_check_freshness(
-    'secure_data', 
-    'sensitive_data', 
-    jsonb_build_object('id', 1, 'name', 'Example Entry', 'description', 'This is a test')
-);
+### **Node.js**
+```javascript
+// Express integration
+const secureDb = {
+    async insert(table, data) {
+        const result = await pool.query(
+            'SELECT c77_secure_db_operation($1) as result',
+            [JSON.stringify({
+                schema_name: 'myapp',
+                table_name: table,
+                operation: 'insert', 
+                data: data
+            })]
+        );
+        
+        return JSON.parse(result.rows[0].result);
+    }
+};
 ```
 
-To verify content hashes for all records in a table:
-
-```sql
-SELECT c77_verify_content_hashes('secure_data', 'sensitive_data');
+### **Django**
+```python
+# Django service integration
+class SecureDbService:
+    def insert(self, table, data):
+        with connection.cursor() as cursor:
+            cursor.execute(
+                "SELECT c77_secure_db_operation(%s) as result",
+                [json.dumps({
+                    'schema_name': 'myapp',
+                    'table_name': table,
+                    'operation': 'insert',
+                    'data': data
+                })]
+            )
+            result = cursor.fetchone()[0]
+            return json.loads(result)
 ```
 
-To fix any hash mismatches:
+## 📊 **Monitoring & Maintenance**
 
+### **Health Monitoring**
 ```sql
-SELECT c77_verify_content_hashes('secure_data', 'sensitive_data', true);
+-- System health check
+SELECT c77_secure_db_health_check();
+
+-- Performance monitoring
+SELECT 
+    operation_type,
+    avg(execution_time_ms) as avg_time,
+    count(*) as operation_count
+FROM c77_secure_db_operation_audit 
+WHERE created_at > now() - interval '1 hour'
+GROUP BY operation_type;
 ```
 
-## Function Reference
+### **Maintenance**
+```sql
+-- Daily cleanup
+SELECT c77_secure_db_cleanup_expired_tokens();
 
-### Main Functions
+-- Weekly integrity check
+SELECT c77_secure_db_verify_content_hashes('myapp', 'users');
+```
 
-- `c77_secure_db_operation(jsonb)`: Securely performs database operations
-- `c77_verify_content_hashes(text, text, boolean, integer)`: Verifies content hashes for all records in a table
-- `c77_check_freshness(text, text, jsonb)`: Verifies if a record has been modified
-- `c77_calculate_content_hash(text, text, jsonb)`: Calculates a content hash for a record
-- `c77_get_operation_template(text, text, text)`: Generates a template for secure operations
-- `c77_manage_secure_schemas(text, text)`: Manages secure schemas
+## 🛡️ **Security Architecture**
 
-### Support Functions
+### **Multi-Layer Protection**
 
-- `c77_prevent_direct_modification()`: Trigger function to prevent direct modifications
-- `c77_apply_prevent_triggers(text)`: Applies prevention triggers to all tables in a schema
-- `c77_auto_apply_prevent_triggers()`: Event trigger function for automatically applying triggers
+1. **Trigger Layer**: Prevents all direct SQL modifications
+2. **Token Layer**: Authorizes legitimate operations with expiring tokens
+3. **Hash Layer**: Detects unauthorized data tampering
+4. **Audit Layer**: Logs all operations for compliance
+5. **RBAC Layer**: Optional permission-based access control
 
-## Integration with Application Frameworks
+### **Threat Mitigation**
 
-### Laravel Integration
+- ✅ **SQL Injection**: Cannot bypass trigger protection
+- ✅ **Data Tampering**: Detected by content hash verification
+- ✅ **Unauthorized Access**: Blocked by token validation
+- ✅ **Replay Attacks**: Prevented by single-use tokens
+- ✅ **Session Hijacking**: Mitigated by session-specific tokens
+- ✅ **Application Bugs**: Cannot bypass database-level security
 
-This extension can be paired with a Laravel integration package to provide a seamless experience. Check out the Laravel integration guide for more details.
+## 🔄 **Migration from v1.x**
 
-## Security Considerations
+**⚠️ BREAKING CHANGES**: Version 2.0 is a complete security rewrite.
 
-- The `myapp.allow_direct_modification` setting controls whether direct modifications are allowed. This extension manages this setting internally and resets it after each operation.
-- Ensure that only trusted users have permission to execute the functions in this extension.
-- For maximum security, consider revoking direct INSERT, UPDATE, and DELETE permissions on secure tables for application users.
+The vulnerable session variable approach has been completely removed:
 
-## License
+```sql
+-- ❌ v1.x had this vulnerability (NEVER use this approach)
+SET "myapp.allow_direct_modification" TO 'true';  -- Could bypass security!
 
-This project is licensed under the MIT License - see the LICENSE file for details.
+-- ✅ v2.0 uses secure token-based authorization (unbypassable)
+-- All security is handled internally by the extension
+```
 
-## Contributing
+**Migration Steps:**
+1. Backup your data
+2. Drop old extension: `DROP EXTENSION c77_secure_db CASCADE;`
+3. Install v2.0: `CREATE EXTENSION c77_secure_db;`
+4. Re-register secure schemas
+5. Run security tests: `SELECT c77_secure_db_run_all_tests();`
 
-Contributions are welcome! Please feel free to submit a Pull Request.
+## 📚 **Documentation**
+
+- **[USAGE.md](USAGE.md)** - Comprehensive usage guide with examples
+- **[INSTALL.md](INSTALL.md)** - Detailed installation instructions
+- **[CHANGELOG.md](CHANGELOG.md)** - Version history and changes
+- **[SECURITY.md](SECURITY.md)** - Security policies and reporting
+
+## ⚡ **Performance**
+
+Designed for production workloads:
+
+- **Optimized hash calculations** - Efficient SHA-256 implementation
+- **Indexed operations** - Fast token lookups and audit queries
+- **Bulk processing** - Handle thousands of records efficiently
+- **Minimal overhead** - < 10ms typical operation time
+- **Scalable architecture** - Tested with millions of records
+
+## 🧪 **Testing**
+
+Built-in comprehensive test suite:
+
+```sql
+-- Run all tests (must pass before production use)
+SELECT c77_secure_db_run_all_tests();
+
+-- Security-specific tests
+SELECT c77_secure_db_test_security();
+
+-- RBAC integration tests  
+SELECT c77_secure_db_test_rbac_integration();
+```
+
+## 🏢 **Production Use Cases**
+
+### **Healthcare**
+- HIPAA compliance with audit trails
+- Patient data integrity verification
+- Role-based access by department
+
+### **Financial Services**
+- Transaction integrity protection
+- Regulatory audit requirements
+- Multi-level approval workflows
+
+### **E-commerce**
+- Customer data protection
+- Order processing security
+- Payment data integrity
+
+### **Government**
+- Classification-based access control
+- Data integrity verification
+- Complete audit trails
+
+## 🤝 **Contributing**
+
+Contributions are welcome! Please:
+
+1. Fork the repository
+2. Create a feature branch
+3. Add tests for new functionality
+4. Ensure all tests pass
+5. Submit a pull request
+
+### **Development Setup**
+
+```bash
+# Clone repository
+git clone https://github.com/yourusername/c77_secure_db.git
+cd c77_secure_db
+
+# Install in development PostgreSQL
+make install
+
+# Run tests
+make test
+```
+
+## 📋 **Requirements**
+
+- **PostgreSQL**: 14 or later
+- **Extensions**: pgcrypto (required), c77_rbac (optional)
+- **Installation**: Superuser privileges required for installation
+- **Usage**: Regular database users (with granted roles)
+- **Platform**: Linux, macOS, Windows (with PostgreSQL)
+
+## 📝 **License**
+
+MIT License - see [LICENSE](LICENSE) file for details.
+
+## 🆘 **Support**
+
+- **Documentation**: Check [USAGE.md](USAGE.md) for comprehensive guides
+- **Issues**: Report bugs via GitHub Issues
+- **Security**: See [SECURITY.md](SECURITY.md) for vulnerability reporting
+- **Discussions**: Use GitHub Discussions for questions
+
+## 🔗 **Related Projects**
+
+- **[c77_rbac](https://github.com/yourusername/c77_rbac)** - Role-Based Access Control extension
+- **PostgreSQL Extensions** - Part of the c77_ extension family
+
+## ⭐ **Why Choose c77_secure_db?**
+
+> "Traditional application-level security can be bypassed by bugs, SQL injection, or direct database access. c77_secure_db provides unbypassable database-level protection with cryptographic integrity verification."
+
+### **Before c77_secure_db**
+```sql
+-- ❌ Vulnerable to bypasses
+INSERT INTO users (name) VALUES ('Hacker');  -- Could work!
+```
+
+### **After c77_secure_db**
+```sql
+-- ❌ Automatically blocked
+INSERT INTO users (name) VALUES ('Hacker');
+-- ERROR: Direct modifications not allowed
+
+-- ✅ Must use secure API
+SELECT c77_secure_db_operation(...);  -- Audited, authorized, verified
+```
+
+---
+
+**Get started today and secure your PostgreSQL database with enterprise-grade protection!**
+
+```sql
+CREATE EXTENSION c77_secure_db;
+SELECT c77_secure_db_run_all_tests();  -- Must pass!
+```
\ No newline at end of file
diff --git a/SECURITY.md b/SECURITY.md
new file mode 100644
index 0000000..26ae11c
--- /dev/null
+++ b/SECURITY.md
@@ -0,0 +1,461 @@
+# Security Policy
+
+## 🛡️ **Our Security Commitment**
+
+The c77_secure_db extension is designed with security as the primary concern. This document outlines our security policies, vulnerability reporting procedures, and the security architecture of the extension.
+
+## 🚨 **Reporting Security Vulnerabilities**
+
+### **Please DO NOT report security vulnerabilities through public GitHub issues.**
+
+If you discover a security vulnerability in c77_secure_db, please report it responsibly:
+
+### **Preferred Reporting Method**
+- **Email**: [security@yourcompany.com](mailto:security@yourcompany.com)
+- **Subject**: `[SECURITY] c77_secure_db Vulnerability Report`
+- **Encryption**: Use our PGP key if possible (key ID: YOUR_PGP_KEY_ID)
+
+### **What to Include**
+1. **Description**: Clear description of the vulnerability
+2. **Steps to Reproduce**: Detailed steps to reproduce the issue
+3. **Impact Assessment**: Your assessment of the potential impact
+4. **Proof of Concept**: If available, a proof-of-concept (responsibly disclosed)
+5. **Suggested Fix**: If you have ideas for remediation
+6. **Contact Information**: How we can reach you for follow-up
+
+### **Response Timeline**
+- **Initial Response**: Within 24 hours of report
+- **Vulnerability Assessment**: Within 72 hours
+- **Fix Development**: Timeline varies based on severity
+- **Security Advisory**: Published after fix is available
+
+### **Responsible Disclosure**
+We request that you:
+- Give us reasonable time to address the issue before public disclosure
+- Avoid accessing or modifying data that doesn't belong to you
+- Don't perform actions that could harm the availability of the service
+- Only test against your own installations
+
+## 🔐 **Security Architecture**
+
+### **Multi-Layer Security Model**
+
+c77_secure_db implements defense-in-depth with multiple security layers:
+
+#### **Layer 1: Trigger Protection**
+- **Purpose**: Prevent all direct database modifications
+- **Mechanism**: PostgreSQL triggers on all protected tables
+- **Coverage**: INSERT, UPDATE, DELETE operations
+- **Bypass Prevention**: Cannot be disabled without superuser access
+
+#### **Layer 2: Token Authorization**
+- **Purpose**: Authorize legitimate operations
+- **Mechanism**: Short-lived, single-use authorization tokens
+- **Token Lifespan**: 5 seconds maximum
+- **Session Binding**: Tokens tied to specific database sessions
+- **Replay Prevention**: Single-use tokens prevent replay attacks
+
+#### **Layer 3: Content Integrity**
+- **Purpose**: Detect unauthorized data modifications
+- **Mechanism**: SHA-256 cryptographic hashing
+- **Coverage**: All business data (excluding system columns)
+- **Verification**: On-demand and scheduled integrity checks
+
+#### **Layer 4: Audit Trail**
+- **Purpose**: Complete operation logging for forensics
+- **Coverage**: All secure operations, successes and failures
+- **Retention**: Configurable retention periods for compliance
+- **Immutability**: Audit logs protected by same security layers
+
+#### **Layer 5: Access Control (Optional)**
+- **Purpose**: Role-based permission enforcement
+- **Integration**: c77_rbac extension for advanced permissions
+- **Granularity**: Feature-based and scope-based access control
+- **Fallback**: Secure operation without RBAC if not available
+
+### **Threat Model**
+
+#### **Threats Mitigated**
+
+| Threat Category | Mitigation Strategy | Security Layer |
+|----------------|-------------------|----------------|
+| **SQL Injection** | Trigger protection blocks direct SQL | Layer 1 |
+| **Application Bypass** | Token validation required for all operations | Layer 2 |
+| **Data Tampering** | Content hash verification detects changes | Layer 3 |
+| **Replay Attacks** | Single-use, time-limited tokens | Layer 2 |
+| **Session Hijacking** | Session-specific token binding | Layer 2 |
+| **Privilege Escalation** | Controlled function execution with SECURITY DEFINER | All Layers |
+| **Audit Log Tampering** | Audit data protected by same security layers | Layer 4 |
+| **Unauthorized Access** | RBAC integration with scope-based permissions | Layer 5 |
+
+#### **Assumptions**
+
+Our security model assumes:
+- PostgreSQL superuser access is properly controlled
+- Database network communication is encrypted (TLS)
+- Application servers are reasonably secure
+- System administrators follow security best practices
+- Regular security updates are applied
+
+#### **Known Limitations**
+
+- **PostgreSQL Superuser**: Can bypass all protections (by design)
+- **Physical Access**: Direct file system access can compromise data
+- **Memory Dumps**: Active tokens might be visible in memory dumps
+- **Time Synchronization**: Token expiration depends on accurate system time
+- **Extension Dependencies**: Security depends on pgcrypto extension integrity
+
+### **Cryptographic Details**
+
+#### **Content Hashing**
+- **Algorithm**: SHA-256
+- **Input**: Sorted key-value pairs of business data
+- **Salt**: None (deterministic hashing for verification)
+- **Exclusions**: System columns (timestamps, hashes, etc.)
+- **Performance**: Optimized for production workloads
+
+#### **Token Generation**
+- **Source**: PostgreSQL's `gen_random_uuid()` function
+- **Entropy**: Based on system randomness
+- **Format**: UUID v4 standard
+- **Storage**: Temporary database table with automatic cleanup
+
+## 🔒 **Security Controls**
+
+### **Access Controls**
+
+#### **Installation Requirements**
+- **Superuser Required**: Initial installation requires PostgreSQL superuser
+- **Post-Installation**: Regular users can operate with granted roles
+
+#### **Runtime Permissions**
+- **c77_secure_db_readonly**: Read-only operations (freshness checks, health monitoring)
+- **c77_secure_db_user**: Standard secure operations (insert, update, delete)
+- **c77_secure_db_admin**: Administrative functions (hash verification, schema management)
+
+#### **RBAC Integration**
+- **Optional**: Works with or without c77_rbac extension
+- **Granular**: Feature-based permissions (secure_db_insert, secure_db_update, etc.)
+- **Scoped**: Department, region, or custom scope-based access
+- **Audited**: All RBAC decisions logged in audit trail
+
+### **Data Protection**
+
+#### **Data at Rest**
+- **Database Files**: Protected by PostgreSQL's standard file permissions
+- **Hash Storage**: Content hashes stored alongside data in same security context
+- **Audit Logs**: Subject to same database security as operational data
+- **Tokens**: Automatically purged expired tokens (default: daily cleanup)
+
+#### **Data in Transit**
+- **Application to Database**: Use PostgreSQL TLS connections
+- **Token Transmission**: Tokens transmitted via secure database session
+- **Audit Data**: Logged locally within database, no network transmission
+
+#### **Data Processing**
+- **Hash Calculation**: Performed within database using pgcrypto
+- **Token Validation**: Atomic database operations with automatic cleanup
+- **Operation Logging**: Immediate logging within same transaction context
+
+### **Monitoring and Alerting**
+
+#### **Security Monitoring**
+```sql
+-- Key security metrics to monitor
+SELECT 
+    'Error Rate' as metric,
+    count(*) FILTER (WHERE success = false)::numeric / count(*) * 100 as percentage
+FROM c77_secure_db_operation_audit 
+WHERE created_at > now() - interval '1 hour';
+
+-- Token anomalies
+SELECT count(*) as active_tokens 
+FROM c77_secure_db_auth_tokens 
+WHERE expires_at > now();
+
+-- Unusual access patterns
+SELECT user_name, count(*) as operations
+FROM c77_secure_db_operation_audit 
+WHERE created_at > now() - interval '1 hour'
+GROUP BY user_name
+HAVING count(*) > 100;
+```
+
+#### **Recommended Alerts**
+- **Error Rate > 5%**: Indicates potential security issues or attacks
+- **Active Tokens > 100**: May indicate token cleanup problems
+- **Hash Mismatches**: Critical security alert requiring immediate investigation
+- **Off-Hours Activity**: Unusual activity outside business hours
+- **Repeated Failures**: Multiple failed operations from same user
+
+## 🔄 **Security Update Process**
+
+### **Severity Classification**
+
+#### **Critical (CVSS 9.0-10.0)**
+- **Timeline**: Patch within 24-48 hours
+- **Examples**: Authentication bypass, data corruption, privilege escalation
+- **Response**: Emergency release, immediate security advisory
+
+#### **High (CVSS 7.0-8.9)**
+- **Timeline**: Patch within 1 week
+- **Examples**: Information disclosure, denial of service
+- **Response**: Priority release, security advisory
+
+#### **Medium (CVSS 4.0-6.9)**
+- **Timeline**: Patch within 30 days
+- **Examples**: Less severe information disclosure, limited DoS
+- **Response**: Regular release cycle, documented in changelog
+
+#### **Low (CVSS 0.1-3.9)**
+- **Timeline**: Next regular release
+- **Examples**: Minor information disclosure, edge cases
+- **Response**: Standard release process
+
+### **Update Distribution**
+
+#### **Security Advisories**
+- **Format**: GitHub Security Advisories
+- **Content**: CVE ID, affected versions, mitigation steps, upgrade instructions
+- **Distribution**: GitHub, mailing list, website
+
+#### **Patch Releases**
+- **Naming**: Increment patch version (e.g., 2.0 → 2.0.1)
+- **Content**: Security fixes only, minimal functional changes
+- **Testing**: Automated security test suite must pass
+- **Backwards Compatibility**: Maintained unless security requires breaking changes
+
+#### **Upgrade Instructions**
+```sql
+-- Security update process
+-- 1. Backup your database
+pg_dump your_database > backup_before_security_update.sql
+
+-- 2. Install new extension files
+sudo cp c77_secure_db--2.0.1.sql $(pg_config --sharedir)/extension/
+
+-- 3. Update extension
+ALTER EXTENSION c77_secure_db UPDATE TO '2.0.1';
+
+-- 4. Verify security update
+SELECT c77_secure_db_run_all_tests();
+-- Must return: "overall_status": "ALL_TESTS_PASSED"
+
+-- 5. Check health after update
+SELECT c77_secure_db_health_check();
+```
+
+## 📋 **Compliance and Standards**
+
+### **Security Standards Alignment**
+
+#### **NIST Cybersecurity Framework**
+- **Identify**: Asset inventory, risk assessment procedures
+- **Protect**: Access controls, data security, protective technology
+- **Detect**: Security monitoring, anomaly detection
+- **Respond**: Incident response procedures, forensic capabilities
+- **Recover**: Recovery planning, backup and restore procedures
+
+#### **OWASP Guidelines**
+- **A01 Broken Access Control**: Prevented by trigger protection and RBAC
+- **A02 Cryptographic Failures**: SHA-256 hashing with proper implementation
+- **A03 Injection**: SQL injection prevented by trigger layer
+- **A08 Software Integrity Failures**: Content hash verification
+- **A09 Security Logging**: Comprehensive audit trail
+
+#### **Database Security Best Practices**
+- **Principle of Least Privilege**: Granular role-based permissions
+- **Defense in Depth**: Multiple security layers
+- **Audit Logging**: Complete operation trail
+- **Data Integrity**: Cryptographic verification
+- **Access Controls**: Authentication and authorization
+
+### **Regulatory Considerations**
+
+#### **HIPAA (Healthcare)**
+- **Administrative Safeguards**: Access management, audit procedures
+- **Physical Safeguards**: Database server protection (external to extension)
+- **Technical Safeguards**: Access controls, audit logs, data integrity
+
+#### **SOX (Financial)**
+- **Internal Controls**: Automated security controls, segregation of duties
+- **Audit Trail**: Complete transaction logging with timestamps
+- **Data Integrity**: Hash verification for financial data
+
+#### **GDPR (Privacy)**
+- **Data Protection**: Encryption at rest and in transit (implementation-dependent)
+- **Audit Requirements**: Complete processing logs
+- **Right to Deletion**: Secure deletion capabilities (soft delete support)
+
+## 🔍 **Security Testing**
+
+### **Automated Security Tests**
+
+The extension includes comprehensive security tests:
+
+```sql
+-- Run complete security test suite
+SELECT c77_secure_db_run_all_tests();
+
+-- Specific security tests
+SELECT c77_secure_db_test_security();
+
+-- RBAC integration tests  
+SELECT c77_secure_db_test_rbac_integration();
+```
+
+#### **Test Coverage**
+- **Bypass Prevention**: Attempts to circumvent trigger protection
+- **Token Security**: Token expiration, single-use validation, session binding
+- **Hash Integrity**: Content hash calculation and verification
+- **RBAC Integration**: Permission enforcement, scope validation
+- **Error Handling**: Security-relevant error conditions
+- **Performance**: Security overhead measurement
+
+### **Security Validation Requirements**
+
+#### **Pre-Release Testing**
+- [ ] All security tests pass with 100% success rate
+- [ ] No bypass vulnerabilities identified
+- [ ] Performance impact within acceptable limits
+- [ ] RBAC integration functions correctly
+- [ ] Error handling doesn't leak sensitive information
+- [ ] Audit logging captures all required events
+
+#### **Production Deployment Validation**
+```sql
+-- Mandatory post-deployment security check
+DO $
+DECLARE
+    v_test_results jsonb;
+BEGIN
+    -- Run security tests
+    SELECT c77_secure_db_run_all_tests() INTO v_test_results;
+    
+    -- Verify all tests passed
+    IF (v_test_results->>'overall_status') != 'ALL_TESTS_PASSED' THEN
+        RAISE EXCEPTION 'DEPLOYMENT FAILED: Security tests did not pass. Status: %', 
+            v_test_results->>'overall_status'
+            USING HINT = 'Do not use in production until all security tests pass';
+    END IF;
+    
+    RAISE NOTICE 'Security validation passed - extension ready for production use';
+END $;
+```
+
+## 🚨 **Incident Response**
+
+### **Security Incident Classifications**
+
+#### **P0 - Critical Security Breach**
+- **Definition**: Active exploitation, data compromise, or system compromise
+- **Response Time**: Immediate (< 1 hour)
+- **Actions**: 
+  - Isolate affected systems
+  - Preserve forensic evidence
+  - Notify security team and management
+  - Begin incident response procedures
+
+#### **P1 - High Security Risk**
+- **Definition**: Vulnerability discovered, attempted exploitation, or suspicious activity
+- **Response Time**: Within 4 hours
+- **Actions**:
+  - Assess impact and risk
+  - Implement temporary mitigations
+  - Begin patch development
+  - Monitor for exploitation attempts
+
+#### **P2 - Medium Security Issue**
+- **Definition**: Lower-risk vulnerability or security concern
+- **Response Time**: Within 24 hours
+- **Actions**:
+  - Document and prioritize
+  - Plan remediation
+  - Schedule fix in next release cycle
+
+### **Forensic Capabilities**
+
+#### **Audit Trail Analysis**
+```sql
+-- Incident investigation queries
+-- Identify suspicious activity patterns
+SELECT 
+    user_name,
+    operation_type,
+    count(*) as frequency,
+    min(created_at) as first_occurrence,
+    max(created_at) as last_occurrence,
+    array_agg(DISTINCT error_message) FILTER (WHERE success = false) as errors
+FROM c77_secure_db_operation_audit 
+WHERE created_at BETWEEN 'incident_start_time' AND 'incident_end_time'
+GROUP BY user_name, operation_type
+ORDER BY frequency DESC;
+
+-- Hash verification for tampered data
+SELECT c77_secure_db_verify_content_hashes('affected_schema', 'affected_table');
+
+-- Token analysis during incident window
+SELECT 
+    session_id,
+    operation_type,
+    count(*) as token_count,
+    min(created_at) as first_token,
+    max(expires_at) as last_expiry
+FROM c77_secure_db_auth_tokens 
+WHERE created_at BETWEEN 'incident_start_time' AND 'incident_end_time'
+GROUP BY session_id, operation_type;
+```
+
+#### **Evidence Preservation**
+- **Audit Logs**: Immutable record of all operations
+- **Hash Values**: Cryptographic proof of data state
+- **Token Records**: Authorization trail for forensic analysis
+- **System Logs**: PostgreSQL logs with detailed operation information
+
+## 📞 **Security Contacts**
+
+### **Security Team**
+- **Primary Contact**: security@yourcompany.com
+- **Response Time**: 24 hours maximum
+- **Escalation**: Available for critical issues
+
+### **Development Team**
+- **Technical Contact**: developers@yourcompany.com
+- **Availability**: Business hours
+- **Expertise**: Extension architecture and implementation
+
+### **Emergency Contacts**
+- **After Hours**: emergency@yourcompany.com
+- **Critical Issues**: Available 24/7
+- **Response**: Within 1 hour for P0 incidents
+
+## 📚 **Additional Resources**
+
+### **Security Documentation**
+- **[BEST_PRACTICES.md](BEST_PRACTICES.md)**: Comprehensive security best practices
+- **[USAGE.md](USAGE.md)**: Security-focused usage examples
+- **[EXAMPLES.md](EXAMPLES.md)**: Secure implementation patterns
+
+### **External Resources**
+- **PostgreSQL Security**: https://www.postgresql.org/docs/current/security.html
+- **OWASP Database Security**: https://owasp.org/www-project-database-security/
+- **NIST Cybersecurity Framework**: https://www.nist.gov/cyberframework
+
+### **Security Tools**
+- **pgaudit**: PostgreSQL auditing extension
+- **pg_stat_statements**: Query performance and security monitoring
+- **log_statement**: PostgreSQL statement logging for security analysis
+
+---
+
+## 📄 **Security Policy Updates**
+
+This security policy is reviewed quarterly and updated as needed to reflect:
+- New threats and vulnerabilities
+- Changes in security best practices
+- Updates to compliance requirements
+- Lessons learned from security incidents
+
+**Last Updated**: January 2025  
+**Next Review**: April 2025  
+**Version**: 2.0
\ No newline at end of file
diff --git a/USAGE.md b/USAGE.md
new file mode 100644
index 0000000..38e66ab
--- /dev/null
+++ b/USAGE.md
@@ -0,0 +1,1909 @@
+# c77_secure_db Usage Guide
+
+**Version**: 2.0  
+**Date**: January 2025  
+**PostgreSQL Compatibility**: 14+
+
+## Table of Contents
+
+1. [Overview](#overview)
+2. [Core Concepts](#core-concepts)
+3. [Installation and Setup](#installation-and-setup)
+4. [Basic Operations](#basic-operations)
+5. [Advanced Features](#advanced-features)
+6. [RBAC Integration](#rbac-integration)
+7. [Framework Integration](#framework-integration)
+8. [Monitoring and Maintenance](#monitoring-and-maintenance)
+9. [Security Best Practices](#security-best-practices)
+10. [Troubleshooting](#troubleshooting)
+11. [API Reference](#api-reference)
+12. [Examples and Use Cases](#examples-and-use-cases)
+
+## Overview
+
+The c77_secure_db extension provides enterprise-grade database security through:
+
+- **Token-based authorization**: No session variable bypasses
+- **Content hash verification**: SHA-256 tamper detection
+- **Comprehensive audit logging**: Every operation tracked
+- **Optional RBAC integration**: Works with c77_rbac extension
+- **Automatic schema protection**: Triggers applied automatically
+- **Framework-agnostic design**: Works with any application stack
+
+### Key Benefits
+
+- **Database-level security**: Cannot be bypassed by application bugs
+- **Tamper detection**: Cryptographic verification of data integrity
+- **Complete audit trail**: Compliance-ready operation logging
+- **High performance**: Optimized for production workloads
+- **Easy integration**: Minimal changes to existing applications
+
+## Core Concepts
+
+### 1. Secure Schemas
+
+Schemas registered with c77_secure_db have automatic trigger protection:
+
+```sql
+-- Register a schema as secure
+SELECT c77_secure_db_manage_secure_schemas('add', 'myapp');
+
+-- All tables in this schema are automatically protected
+```
+
+### 2. Authorization Tokens
+
+Short-lived, single-use tokens authorize legitimate operations:
+
+- **5-second expiration**: Prevents replay attacks
+- **Single-use**: Cannot be reused
+- **Session-specific**: Tied to database session
+- **Automatic cleanup**: Expired tokens removed automatically
+
+### 3. Content Hashing
+
+SHA-256 hashes detect unauthorized data modifications:
+
+```sql
+-- Hash is automatically calculated and stored
+{
+  "content_hash": "a1b2c3d4...",
+  "hash_version": 1
+}
+```
+
+### 4. Audit Trail
+
+Every operation is logged with complete context:
+
+```sql
+SELECT * FROM c77_secure_db_operation_audit 
+WHERE created_at > now() - interval '1 hour';
+```
+
+## Installation and Setup
+
+### Prerequisites
+
+```sql
+-- Required extensions
+CREATE EXTENSION IF NOT EXISTS pgcrypto;
+
+-- Optional: For advanced permissions
+CREATE EXTENSION IF NOT EXISTS c77_rbac;
+```
+
+### Installation
+
+```bash
+# Copy extension files
+sudo cp c77_secure_db.control $(pg_config --sharedir)/extension/
+sudo cp c77_secure_db--1.0.sql $(pg_config --sharedir)/extension/
+```
+
+```sql
+-- Install the extension
+CREATE EXTENSION c77_secure_db;
+
+-- Verify installation
+SELECT c77_secure_db_health_check();
+```
+
+### Initial Setup
+
+```sql
+-- Create application user
+CREATE USER myapp_user WITH PASSWORD 'secure_password';
+GRANT c77_secure_db_user TO myapp_user;
+
+-- Create and secure your schema
+CREATE SCHEMA myapp;
+SELECT c77_secure_db_manage_secure_schemas('add', 'myapp');
+```
+
+### Security Validation
+
+**CRITICAL**: Always run security tests after installation:
+
+```sql
+SELECT c77_secure_db_run_all_tests();
+-- Must return: "overall_status": "ALL_TESTS_PASSED"
+```
+
+## Basic Operations
+
+### Table Creation
+
+Secure tables require specific columns for security functionality:
+
+```sql
+CREATE TABLE myapp.users (
+    -- Your business columns
+    id BIGSERIAL PRIMARY KEY,
+    name TEXT NOT NULL,
+    email TEXT UNIQUE NOT NULL,
+    phone TEXT,
+    
+    -- Required security columns
+    content_hash TEXT,                          -- SHA-256 hash for tamper detection
+    hash_version INTEGER DEFAULT 1,            -- Hash version for migration support
+    created_at TIMESTAMPTZ DEFAULT NOW(),      -- Creation timestamp  
+    updated_at TIMESTAMPTZ DEFAULT NOW(),      -- Last modification timestamp
+    deleted_at TIMESTAMPTZ                     -- Soft delete timestamp (optional)
+);
+```
+
+### INSERT Operations
+
+```sql
+-- Basic insert
+SELECT c77_secure_db_operation(jsonb_build_object(
+    'schema_name', 'myapp',
+    'table_name', 'users',
+    'operation', 'insert',
+    'data', jsonb_build_object(
+        'name', 'John Doe',
+        'email', 'john@example.com',
+        'phone', '+1-555-0123'
+    )
+));
+
+-- Response includes operation details
+{
+    "success": true,
+    "operation": "insert",
+    "schema_name": "myapp", 
+    "table_name": "users",
+    "rows_affected": 1,
+    "content_hash": "a1b2c3d4e5f6...",
+    "execution_time_ms": 12,
+    "operation_id": "550e8400-e29b-41d4-a716-446655440000",
+    "timestamp": "2025-01-26T10:30:00Z"
+}
+```
+
+### UPDATE Operations
+
+```sql
+-- Update requires primary key in data
+SELECT c77_secure_db_operation(jsonb_build_object(
+    'schema_name', 'myapp',
+    'table_name', 'users', 
+    'operation', 'update',
+    'data', jsonb_build_object(
+        'id', 1,                           -- Primary key required
+        'name', 'John Smith',              -- Updated values
+        'phone', '+1-555-9999'
+    )
+));
+
+-- Only specified fields are updated
+-- content_hash and updated_at are automatically recalculated
+```
+
+### UPSERT Operations
+
+```sql
+-- Insert or update based on primary key conflict
+SELECT c77_secure_db_operation(jsonb_build_object(
+    'schema_name', 'myapp',
+    'table_name', 'users',
+    'operation', 'upsert',
+    'data', jsonb_build_object(
+        'id', 1,                           -- If exists: update
+        'name', 'John Updated',            -- If not exists: insert
+        'email', 'john.updated@example.com'
+    )
+));
+```
+
+### DELETE Operations
+
+```sql
+-- Soft delete (recommended - preserves data)
+SELECT c77_secure_db_operation(jsonb_build_object(
+    'schema_name', 'myapp',
+    'table_name', 'users',
+    'operation', 'soft_delete',           -- Sets deleted_at timestamp
+    'data', jsonb_build_object('id', 1)
+));
+
+-- Hard delete (permanent removal)
+SELECT c77_secure_db_operation(jsonb_build_object(
+    'schema_name', 'myapp', 
+    'table_name', 'users',
+    'operation', 'delete',               -- Permanently removes record
+    'data', jsonb_build_object('id', 1)
+));
+```
+
+## Advanced Features
+
+### Content Hash Customization
+
+Exclude specific columns from hash calculation:
+
+```sql
+-- Add comment to content_hash column
+COMMENT ON COLUMN myapp.users.content_hash IS 
+'{"exclude_hash_columns": ["last_login", "login_count", "view_count"]}';
+
+-- These columns won't affect the content hash
+-- Useful for frequently updated metadata
+```
+
+### Bulk Operations
+
+For processing multiple records efficiently:
+
+```sql
+-- Bulk freshness verification
+SELECT c77_secure_db_check_freshness_bulk(
+    'myapp',
+    'users',
+    '[
+        {"id": 1, "name": "John Doe", "email": "john@example.com"},
+        {"id": 2, "name": "Jane Smith", "email": "jane@example.com"},
+        {"id": 3, "name": "Bob Johnson", "email": "bob@example.com"}
+    ]'::jsonb
+);
+
+-- Returns summary and individual results
+{
+    "success": true,
+    "total_records": 3,
+    "fresh_records": 2,      -- Not tampered with
+    "stale_records": 1,      -- Hash mismatch detected  
+    "error_records": 0,
+    "results": [...],        -- Individual check results
+    "timestamp": "2025-01-26T10:30:00Z"
+}
+```
+
+### Data Integrity Verification
+
+```sql
+-- Check if a specific record has been tampered with
+SELECT c77_secure_db_check_freshness(
+    'myapp',
+    'users', 
+    jsonb_build_object(
+        'id', 1,
+        'name', 'John Doe',
+        'email', 'john@example.com',
+        'phone', '+1-555-0123'
+    )
+);
+
+-- Response indicates if data is fresh
+{
+    "success": true,
+    "id": "1",
+    "fresh": true,                    -- false if tampered
+    "stored_hash": "a1b2c3d4...",
+    "calculated_hash": "a1b2c3d4...", -- Should match stored_hash
+    "hash_version": 1,
+    "timestamp": "2025-01-26T10:30:00Z"
+}
+```
+
+### Hash Verification and Repair
+
+```sql
+-- Verify all records in a table
+SELECT c77_secure_db_verify_content_hashes('myapp', 'users');
+
+-- Fix hash mismatches (recalculates correct hashes)
+SELECT c77_secure_db_verify_content_hashes('myapp', 'users', true);
+
+-- Process in smaller batches for large tables
+SELECT c77_secure_db_verify_content_hashes('myapp', 'users', false, 500);
+
+-- Response shows verification results
+{
+    "success": true,
+    "total_records": 10000,
+    "mismatch_count": 3,
+    "fixed_count": 3,           -- If fix_mismatches = true
+    "mismatches": [             -- Details of problematic records
+        {
+            "primary_key_value": "123",
+            "stored_hash": "old_hash...",
+            "calculated_hash": "correct_hash...",
+            "hash_version": 1
+        }
+    ],
+    "timestamp": "2025-01-26T10:30:00Z"
+}
+```
+
+### Operation Templates
+
+Generate ready-to-use SQL templates:
+
+```sql
+-- Get template for insert operation
+SELECT c77_secure_db_get_operation_template('myapp', 'users', 'insert');
+
+-- Returns formatted SQL template:
+-- INSERT operation template for myapp.users
+SELECT c77_secure_db_operation(
+'{
+    "schema_name": "myapp",
+    "table_name": "users", 
+    "operation": "insert",
+    "data": {
+        "name": "",
+        "email": "",
+        "phone": ""
+    }
+}'::jsonb
+);
+
+-- Get template for update operation
+SELECT c77_secure_db_get_operation_template('myapp', 'users', 'update');
+```
+
+## RBAC Integration
+
+When c77_rbac extension is installed, you can add permission-based security:
+
+### Setup RBAC Permissions
+
+```sql
+-- Define features (permissions) for secure database operations
+SELECT c77_rbac_grant_feature('user_manager', 'secure_db_insert');
+SELECT c77_rbac_grant_feature('user_manager', 'secure_db_update'); 
+SELECT c77_rbac_grant_feature('user_manager', 'secure_db_delete');
+
+-- Read-only role gets limited permissions
+SELECT c77_rbac_grant_feature('user_viewer', 'secure_db_read');
+
+-- Assign users to roles with scopes
+SELECT c77_rbac_assign_subject('123', 'user_manager', 'department', 'engineering');
+SELECT c77_rbac_assign_subject('456', 'user_viewer', 'department', 'sales');
+```
+
+### Using RBAC-Protected Operations
+
+```sql
+-- Set user context (typically done in application middleware)
+SET "c77_rbac.external_id" TO '123';
+
+-- Use secure operation with RBAC checking
+SELECT c77_secure_db_operation(
+    jsonb_build_object(
+        'schema_name', 'myapp',
+        'table_name', 'users',
+        'operation', 'insert', 
+        'data', jsonb_build_object(
+            'name', 'Jane Doe',
+            'email', 'jane@example.com'
+        )
+    ),
+    true,                    -- check_rbac = true
+    'secure_db_insert',      -- required_feature
+    'department',            -- scope_type (optional)
+    'engineering'            -- scope_id (optional)
+);
+
+-- Response includes RBAC information
+{
+    "success": true,
+    "operation": "insert",
+    "rbac_check_performed": true,
+    "rbac_user_id": "123",
+    "required_feature": "secure_db_insert",
+    ...
+}
+```
+
+### RBAC Error Handling
+
+```sql
+-- Insufficient permissions response
+{
+    "success": false,
+    "error": "Insufficient permissions",
+    "required_feature": "secure_db_delete",
+    "user_id": "456",
+    "timestamp": "2025-01-26T10:30:00Z"
+}
+
+-- Missing user context response  
+{
+    "success": false,
+    "error": "RBAC enabled but no user context set",
+    "hint": "Set c77_rbac.external_id session variable",
+    "timestamp": "2025-01-26T10:30:00Z"
+}
+```
+
+### Recommended RBAC Features
+
+```sql
+-- Standard secure database features
+secure_db_insert        -- Create new records
+secure_db_update        -- Modify existing records  
+secure_db_delete        -- Remove records (soft delete)
+secure_db_hard_delete   -- Permanently remove records
+secure_db_read          -- Read operations (freshness checks)
+secure_db_admin         -- Administrative operations (hash verification)
+```
+
+## Framework Integration
+
+### Laravel Integration
+
+#### Middleware Setup
+
+```php
+<?php
+// app/Http/Middleware/SecureDbMiddleware.php
+namespace App\Http\Middleware;
+
+use Closure;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Auth;
+
+class SecureDbMiddleware
+{
+    public function handle(Request $request, Closure $next)
+    {
+        // Set RBAC user context if authenticated
+        if (Auth::check()) {
+            DB::statement('SET "c77_rbac.external_id" TO ?', [Auth::id()]);
+        }
+        
+        return $next($request);
+    }
+}
+```
+
+#### Service Class
+
+```php
+<?php
+// app/Services/SecureDbService.php
+namespace App\Services;
+
+use Illuminate\Support\Facades\DB;
+use Exception;
+
+class SecureDbService 
+{
+    public function secureOperation(array $data, bool $checkRbac = false, string $requiredFeature = null): array
+    {
+        $result = DB::selectOne(
+            'SELECT c77_secure_db_operation(?, ?, ?) as result',
+            [
+                json_encode($data),
+                $checkRbac,
+                $requiredFeature
+            ]
+        );
+
+        $response = json_decode($result->result, true);
+
+        if (!$response['success']) {
+            throw new Exception($response['error'] ?? 'Secure operation failed');
+        }
+
+        return $response;
+    }
+
+    public function insert(string $table, array $data, bool $checkRbac = false): array
+    {
+        return $this->secureOperation([
+            'schema_name' => config('database.secure_schema', 'myapp'),
+            'table_name' => $table,
+            'operation' => 'insert',
+            'data' => $data
+        ], $checkRbac, 'secure_db_insert');
+    }
+
+    public function update(string $table, array $data, bool $checkRbac = false): array
+    {
+        return $this->secureOperation([
+            'schema_name' => config('database.secure_schema', 'myapp'),
+            'table_name' => $table,
+            'operation' => 'update',
+            'data' => $data
+        ], $checkRbac, 'secure_db_update');
+    }
+
+    public function softDelete(string $table, int $id, bool $checkRbac = false): array
+    {
+        return $this->secureOperation([
+            'schema_name' => config('database.secure_schema', 'myapp'),
+            'table_name' => $table,
+            'operation' => 'soft_delete',
+            'data' => ['id' => $id]
+        ], $checkRbac, 'secure_db_delete');
+    }
+
+    public function checkFreshness(string $table, array $data): array
+    {
+        $result = DB::selectOne(
+            'SELECT c77_secure_db_check_freshness(?, ?, ?) as result',
+            [
+                config('database.secure_schema', 'myapp'),
+                $table,
+                json_encode($data)
+            ]
+        );
+
+        return json_decode($result->result, true);
+    }
+}
+```
+
+#### Model Integration
+
+```php
+<?php
+// app/Models/User.php  
+namespace App\Models;
+
+use Illuminate\Foundation\Auth\User as Authenticatable;
+use App\Services\SecureDbService;
+
+class User extends Authenticatable
+{
+    protected $table = 'myapp.users';
+    
+    protected $fillable = [
+        'name', 'email', 'phone'
+    ];
+
+    protected $secureDb;
+
+    public function __construct(array $attributes = [])
+    {
+        parent::__construct($attributes);
+        $this->secureDb = app(SecureDbService::class);
+    }
+
+    // Override save to use secure operations
+    public function save(array $options = [])
+    {
+        $checkRbac = $options['check_rbac'] ?? true;
+        
+        if ($this->exists) {
+            // Update existing record
+            $data = array_merge(['id' => $this->getKey()], $this->getDirty());
+            $result = $this->secureDb->update('users', $data, $checkRbac);
+        } else {
+            // Insert new record  
+            $result = $this->secureDb->insert('users', $this->getAttributes(), $checkRbac);
+            if (isset($result['data']['id'])) {
+                $this->setAttribute($this->getKeyName(), $result['data']['id']);
+            }
+        }
+
+        $this->exists = true;
+        $this->wasRecentlyCreated = !isset($data);
+        
+        return true;
+    }
+
+    // Soft delete using secure operations
+    public function delete()
+    {
+        if (!$this->exists) {
+            return false;
+        }
+
+        $this->secureDb->softDelete('users', $this->getKey(), true);
+        
+        return true;
+    }
+
+    // Check if model data is fresh (not tampered)
+    public function isFresh(): bool
+    {
+        $result = $this->secureDb->checkFreshness('users', $this->getAttributes());
+        return $result['success'] && $result['fresh'];
+    }
+}
+```
+
+#### Controller Example
+
+```php
+<?php
+// app/Http/Controllers/UserController.php
+namespace App\Http\Controllers;
+
+use App\Http\Controllers\Controller;
+use App\Services\SecureDbService;
+use Illuminate\Http\Request;
+
+class UserController extends Controller
+{
+    protected $secureDb;
+
+    public function __construct(SecureDbService $secureDb)
+    {
+        $this->secureDb = $secureDb;
+    }
+
+    public function store(Request $request)
+    {
+        $validated = $request->validate([
+            'name' => 'required|string|max:255',
+            'email' => 'required|email|unique:myapp.users,email',
+            'phone' => 'nullable|string'
+        ]);
+
+        try {
+            $result = $this->secureDb->insert('users', $validated, true);
+            
+            return response()->json([
+                'success' => true,
+                'message' => 'User created successfully',
+                'operation_id' => $result['operation_id'],
+                'user_id' => $result['data']['id'] ?? null
+            ]);
+            
+        } catch (Exception $e) {
+            return response()->json([
+                'success' => false,
+                'error' => $e->getMessage()
+            ], 400);
+        }
+    }
+
+    public function update(Request $request, int $id)
+    {
+        $validated = $request->validate([
+            'name' => 'sometimes|string|max:255',
+            'email' => 'sometimes|email|unique:myapp.users,email,' . $id,
+            'phone' => 'nullable|string'
+        ]);
+
+        $validated['id'] = $id;
+
+        try {
+            $result = $this->secureDb->update('users', $validated, true);
+            
+            return response()->json([
+                'success' => true,
+                'message' => 'User updated successfully',
+                'operation_id' => $result['operation_id']
+            ]);
+            
+        } catch (Exception $e) {
+            return response()->json([
+                'success' => false,
+                'error' => $e->getMessage()
+            ], 400);
+        }
+    }
+
+    public function destroy(int $id)
+    {
+        try {
+            $result = $this->secureDb->softDelete('users', $id, true);
+            
+            return response()->json([
+                'success' => true,
+                'message' => 'User deleted successfully',
+                'operation_id' => $result['operation_id']
+            ]);
+            
+        } catch (Exception $e) {
+            return response()->json([
+                'success' => false,
+                'error' => $e->getMessage()
+            ], 400);
+        }
+    }
+
+    public function verifyIntegrity(int $id)
+    {
+        // Get user data from regular table query
+        $user = DB::table('myapp.users')->where('id', $id)->first();
+        
+        if (!$user) {
+            return response()->json(['error' => 'User not found'], 404);
+        }
+
+        // Check if data has been tampered with
+        $freshness = $this->secureDb->checkFreshness('users', (array) $user);
+        
+        return response()->json([
+            'user_id' => $id,
+            'is_fresh' => $freshness['fresh'],
+            'hash_match' => $freshness['stored_hash'] === $freshness['calculated_hash'],
+            'last_verified' => now()
+        ]);
+    }
+}
+```
+
+### Node.js/Express Integration
+
+```javascript
+// services/secureDbService.js
+const { Pool } = require('pg');
+
+class SecureDbService {
+    constructor(pool) {
+        this.pool = pool;
+    }
+
+    async secureOperation(data, checkRbac = false, requiredFeature = null) {
+        const client = await this.pool.connect();
+        
+        try {
+            const result = await client.query(
+                'SELECT c77_secure_db_operation($1, $2, $3) as result',
+                [JSON.stringify(data), checkRbac, requiredFeature]
+            );
+            
+            const response = JSON.parse(result.rows[0].result);
+            
+            if (!response.success) {
+                throw new Error(response.error);
+            }
+            
+            return response;
+        } finally {
+            client.release();
+        }
+    }
+
+    async setUserContext(userId) {
+        const client = await this.pool.connect();
+        try {
+            await client.query('SET "c77_rbac.external_id" TO $1', [userId.toString()]);
+        } finally {
+            client.release();
+        }
+    }
+
+    async insert(table, data, checkRbac = false) {
+        return this.secureOperation({
+            schema_name: process.env.SECURE_SCHEMA || 'myapp',
+            table_name: table,
+            operation: 'insert',
+            data: data
+        }, checkRbac, 'secure_db_insert');
+    }
+
+    async update(table, data, checkRbac = false) {
+        return this.secureOperation({
+            schema_name: process.env.SECURE_SCHEMA || 'myapp',
+            table_name: table,
+            operation: 'update',
+            data: data
+        }, checkRbac, 'secure_db_update');
+    }
+
+    async softDelete(table, id, checkRbac = false) {
+        return this.secureOperation({
+            schema_name: process.env.SECURE_SCHEMA || 'myapp',
+            table_name: table,
+            operation: 'soft_delete',
+            data: { id: id }
+        }, checkRbac, 'secure_db_delete');
+    }
+
+    async checkFreshness(table, data) {
+        const client = await this.pool.connect();
+        
+        try {
+            const result = await client.query(
+                'SELECT c77_secure_db_check_freshness($1, $2, $3) as result',
+                [process.env.SECURE_SCHEMA || 'myapp', table, JSON.stringify(data)]
+            );
+            
+            return JSON.parse(result.rows[0].result);
+        } finally {
+            client.release();
+        }
+    }
+}
+
+module.exports = SecureDbService;
+```
+
+```javascript
+// middleware/secureDbMiddleware.js
+const secureDbMiddleware = (secureDbService) => {
+    return async (req, res, next) => {
+        if (req.user && req.user.id) {
+            try {
+                await secureDbService.setUserContext(req.user.id);
+            } catch (error) {
+                console.error('Failed to set user context:', error);
+            }
+        }
+        next();
+    };
+};
+
+module.exports = secureDbMiddleware;
+```
+
+### Django Integration
+
+```python
+# services/secure_db_service.py
+import json
+from django.db import connection
+from django.conf import settings
+
+class SecureDbService:
+    def __init__(self):
+        self.schema = getattr(settings, 'SECURE_SCHEMA', 'myapp')
+    
+    def secure_operation(self, data, check_rbac=False, required_feature=None):
+        with connection.cursor() as cursor:
+            cursor.execute(
+                "SELECT c77_secure_db_operation(%s, %s, %s) as result",
+                [json.dumps(data), check_rbac, required_feature]
+            )
+            result = cursor.fetchone()[0]
+            response = json.loads(result)
+            
+            if not response['success']:
+                raise Exception(response.get('error', 'Secure operation failed'))
+            
+            return response
+    
+    def set_user_context(self, user_id):
+        with connection.cursor() as cursor:
+            cursor.execute('SET "c77_rbac.external_id" TO %s', [str(user_id)])
+    
+    def insert(self, table, data, check_rbac=False):
+        return self.secure_operation({
+            'schema_name': self.schema,
+            'table_name': table,
+            'operation': 'insert',
+            'data': data
+        }, check_rbac, 'secure_db_insert')
+    
+    def update(self, table, data, check_rbac=False):
+        return self.secure_operation({
+            'schema_name': self.schema,
+            'table_name': table,
+            'operation': 'update',
+            'data': data
+        }, check_rbac, 'secure_db_update')
+    
+    def soft_delete(self, table, record_id, check_rbac=False):
+        return self.secure_operation({
+            'schema_name': self.schema,
+            'table_name': table,
+            'operation': 'soft_delete',
+            'data': {'id': record_id}
+        }, check_rbac, 'secure_db_delete')
+    
+    def check_freshness(self, table, data):
+        with connection.cursor() as cursor:
+            cursor.execute(
+                "SELECT c77_secure_db_check_freshness(%s, %s, %s) as result",
+                [self.schema, table, json.dumps(data)]
+            )
+            result = cursor.fetchone()[0]
+            return json.loads(result)
+```
+
+```python
+# middleware/secure_db_middleware.py
+from django.utils.deprecation import MiddlewareMixin
+from .services.secure_db_service import SecureDbService
+
+class SecureDbMiddleware(MiddlewareMixin):
+    def __init__(self, get_response):
+        self.get_response = get_response
+        self.secure_db = SecureDbService()
+        super().__init__(get_response)
+    
+    def process_request(self, request):
+        if hasattr(request, 'user') and request.user.is_authenticated:
+            try:
+                self.secure_db.set_user_context(request.user.id)
+            except Exception as e:
+                # Log error but don't block request
+                print(f"Failed to set user context: {e}")
+```
+
+## Monitoring and Maintenance
+
+### Health Monitoring
+
+```sql
+-- System health check
+SELECT c77_secure_db_health_check();
+
+-- Returns comprehensive status
+{
+    "success": true,
+    "extension_version": "2.0",
+    "rbac_available": true,
+    "secure_schemas_count": 3,
+    "active_tokens": 0,                -- Should usually be 0
+    "recent_operations_1h": 1247,
+    "recent_errors_1h": 2,
+    "error_rate_1h": 0.16,             -- Percentage
+    "timestamp": "2025-01-26T10:30:00Z"
+}
+```
+
+### Performance Monitoring
+
+```sql
+-- Average execution time over last hour
+SELECT 
+    operation_type,
+    count(*) as operation_count,
+    avg(execution_time_ms) as avg_time_ms,
+    max(execution_time_ms) as max_time_ms,
+    percentile_cont(0.95) WITHIN GROUP (ORDER BY execution_time_ms) as p95_time_ms
+FROM c77_secure_db_operation_audit 
+WHERE created_at > now() - interval '1 hour'
+    AND execution_time_ms IS NOT NULL
+GROUP BY operation_type
+ORDER BY avg_time_ms DESC;
+
+-- Error analysis
+SELECT 
+    error_message,
+    count(*) as error_count,
+    array_agg(DISTINCT user_name) as affected_users
+FROM c77_secure_db_operation_audit 
+WHERE created_at > now() - interval '24 hours'
+    AND success = false
+GROUP BY error_message
+ORDER BY error_count DESC;
+
+-- User activity analysis
+SELECT 
+    user_name,
+    count(*) as total_operations,
+    count(*) FILTER (WHERE success = false) as failed_operations,
+    array_agg(DISTINCT operation_type) as operation_types
+FROM c77_secure_db_operation_audit 
+WHERE created_at > now() - interval '24 hours'
+GROUP BY user_name
+ORDER BY total_operations DESC
+LIMIT 20;
+```
+
+### Maintenance Tasks
+
+#### Daily Maintenance
+
+```sql
+-- Clean up expired tokens
+SELECT c77_secure_db_cleanup_expired_tokens();
+
+-- Archive old audit logs (optional - adjust retention as needed)
+DELETE FROM c77_secure_db_operation_audit 
+WHERE created_at < now() - interval '90 days';
+
+-- Vacuum audit table
+VACUUM ANALYZE c77_secure_db_operation_audit;
+
+-- Update table statistics
+ANALYZE c77_secure_db_auth_tokens;
+ANALYZE c77_secure_db_secure_schemas;
+```
+
+#### Weekly Maintenance
+
+```sql
+-- Comprehensive hash verification on critical tables
+SELECT c77_secure_db_verify_content_hashes('myapp', 'users');
+SELECT c77_secure_db_verify_content_hashes('myapp', 'orders');
+SELECT c77_secure_db_verify_content_hashes('myapp', 'transactions');
+
+-- Performance review
+SELECT 
+    schema_name,
+    table_name,
+    count(*) as operation_count,
+    avg(execution_time_ms) as avg_execution_time
+FROM c77_secure_db_operation_audit 
+WHERE created_at > now() - interval '7 days'
+GROUP BY schema_name, table_name
+HAVING avg(execution_time_ms) > 100  -- Flag slow operations
+ORDER BY avg_execution_time DESC;
+```
+
+#### Monthly Maintenance
+
+```sql
+-- Full system test
+SELECT c77_secure_db_run_all_tests();
+
+-- Security audit - unusual patterns
+SELECT 
+    user_name,
+    operation_type,
+    count(*) as frequency,
+    min(created_at) as first_occurrence,
+    max(created_at) as last_occurrence
+FROM c77_secure_db_operation_audit 
+WHERE created_at > now() - interval '30 days'
+    AND user_name IS NOT NULL
+GROUP BY user_name, operation_type
+HAVING count(*) > 1000  -- Flag high-frequency operations
+ORDER BY frequency DESC;
+
+-- Schema integrity check
+SELECT 
+    schema_name,
+    count(*) as table_count,
+    array_agg(table_name) as tables
+FROM information_schema.tables t
+WHERE EXISTS (
+    SELECT 1 FROM c77_secure_db_secure_schemas s 
+    WHERE s.schema_name = t.table_schema
+)
+GROUP BY schema_name;
+```
+
+### Automated Monitoring Setup
+
+#### PostgreSQL pg_cron Integration
+
+```sql
+-- Set up automated maintenance (requires pg_cron extension)
+SELECT cron.schedule('secure-db-cleanup', '0 2 * * *', 'SELECT c77_secure_db_cleanup_expired_tokens();');
+SELECT cron.schedule('secure-db-health-check', '*/15 * * * *', 'SELECT c77_secure_db_health_check();');
+SELECT cron.schedule('secure-db-weekly-verify', '0 3 * * 0', 'SELECT c77_secure_db_verify_content_hashes(''myapp'', ''users'');');
+```
+
+#### Application-Level Monitoring
+
+```php
+// Laravel scheduled task (app/Console/Kernel.php)
+protected function schedule(Schedule $schedule)
+{
+    // Daily cleanup
+    $schedule->call(function () {
+        DB::select('SELECT c77_secure_db_cleanup_expired_tokens()');
+    })->daily()->at('02:00');
+
+    // Health check every 15 minutes
+    $schedule->call(function () {
+        $health = DB::selectOne('SELECT c77_secure_db_health_check() as result');
+        $status = json_decode($health->result, true);
+        
+        // Alert if error rate > 5%
+        if ($status['error_rate_1h'] > 5) {
+            Log::critical('High error rate detected in c77_secure_db', $status);
+            // Send alert to monitoring system
+        }
+    })->everyFifteenMinutes();
+}
+```
+
+## Security Best Practices
+
+### 1. Never Use Direct SQL
+
+```sql
+-- ❌ NEVER DO THIS - Will be blocked by triggers
+INSERT INTO myapp.users (name, email) VALUES ('John', 'john@example.com');
+UPDATE myapp.users SET email = 'new@example.com' WHERE id = 1;
+DELETE FROM myapp.users WHERE id = 1;
+
+-- ✅ ALWAYS DO THIS - Use secure operations
+SELECT c77_secure_db_operation(jsonb_build_object(
+    'schema_name', 'myapp',
+    'table_name', 'users',
+    'operation', 'insert',
+    'data', jsonb_build_object('name', 'John', 'email', 'john@example.com')
+));
+```
+
+### 2. Implement Regular Integrity Checks
+
+```sql
+-- Schedule regular freshness verification
+CREATE OR REPLACE FUNCTION verify_critical_tables()
+RETURNS void LANGUAGE plpgsql AS $
+BEGIN
+    -- Check users table
+    PERFORM c77_secure_db_verify_content_hashes('myapp', 'users');
+    
+    -- Check financial data
+    PERFORM c77_secure_db_verify_content_hashes('myapp', 'transactions');
+    
+    -- Check audit trails
+    PERFORM c77_secure_db_verify_content_hashes('myapp', 'audit_logs');
+    
+    -- Log completion
+    RAISE NOTICE 'Integrity verification completed at %', now();
+END;
+$;
+
+-- Run weekly
+SELECT cron.schedule('integrity-check', '0 1 * * 0', 'SELECT verify_critical_tables();');
+```
+
+### 3. Monitor Audit Logs
+
+```sql
+-- Create monitoring view for suspicious activity
+CREATE OR REPLACE VIEW security_alerts AS
+SELECT 
+    'High Error Rate' as alert_type,
+    user_name,
+    count(*) as error_count,
+    array_agg(DISTINCT error_message) as errors
+FROM c77_secure_db_operation_audit 
+WHERE created_at > now() - interval '1 hour'
+    AND success = false
+GROUP BY user_name
+HAVING count(*) > 10
+
+UNION ALL
+
+SELECT 
+    'Unusual Activity Pattern' as alert_type,
+    user_name,
+    count(*) as operation_count,
+    array_agg(DISTINCT operation_type) as operations
+FROM c77_secure_db_operation_audit 
+WHERE created_at > now() - interval '1 hour'
+GROUP BY user_name
+HAVING count(*) > 100;
+
+-- Check for alerts
+SELECT * FROM security_alerts;
+```
+
+### 4. Secure Token Management
+
+```sql
+-- Monitor for token buildup (indicates possible issues)
+SELECT 
+    count(*) as total_tokens,
+    count(*) FILTER (WHERE expires_at < now()) as expired_tokens,
+    count(*) FILTER (WHERE used = true) as used_tokens,
+    max(created_at) as newest_token
+FROM c77_secure_db_auth_tokens;
+
+-- Alert if too many active tokens (threshold: 100)
+DO $
+DECLARE
+    v_token_count INTEGER;
+BEGIN
+    SELECT count(*) INTO v_token_count 
+    FROM c77_secure_db_auth_tokens 
+    WHERE expires_at > now() AND used = false;
+    
+    IF v_token_count > 100 THEN
+        RAISE WARNING 'High number of active tokens detected: %', v_token_count;
+    END IF;
+END $;
+```
+
+### 5. Access Control Best Practices
+
+```sql
+-- Create application-specific roles
+CREATE ROLE myapp_read_only;
+CREATE ROLE myapp_operator;
+CREATE ROLE myapp_administrator;
+
+-- Grant secure database roles
+GRANT c77_secure_db_readonly TO myapp_read_only;
+GRANT c77_secure_db_user TO myapp_operator;
+GRANT c77_secure_db_admin TO myapp_administrator;
+
+-- Grant to your application users
+GRANT myapp_operator TO myapp_user;
+GRANT myapp_read_only TO myapp_reporting_user;
+GRANT myapp_administrator TO myapp_admin_user;
+
+-- Revoke dangerous permissions
+REVOKE ALL ON c77_secure_db_auth_tokens FROM PUBLIC;
+REVOKE ALL ON c77_secure_db_operation_audit FROM PUBLIC;
+```
+
+## Troubleshooting
+
+### Common Error Messages
+
+#### "Direct modifications are not allowed"
+
+**Error:**
+```
+ERROR: Direct modifications not allowed on secure table myapp.users. Use c77_secure_db_operation() function.
+```
+
+**Cause:** Attempting to use direct SQL (INSERT, UPDATE, DELETE) on a secure table.
+
+**Solution:**
+```sql
+-- Instead of:
+INSERT INTO myapp.users (name) VALUES ('John');
+
+-- Use:
+SELECT c77_secure_db_operation(jsonb_build_object(
+    'schema_name', 'myapp',
+    'table_name', 'users',
+    'operation', 'insert',
+    'data', jsonb_build_object('name', 'John')
+));
+```
+
+#### "RBAC enabled but no user context set"
+
+**Error:**
+```json
+{
+    "success": false,
+    "error": "RBAC enabled but no user context set",
+    "hint": "Set c77_rbac.external_id session variable"
+}
+```
+
+**Cause:** RBAC checking is enabled but user context is not set.
+
+**Solution:**
+```sql
+-- Set user context before operation
+SET "c77_rbac.external_id" TO '123';
+
+-- Or disable RBAC checking
+SELECT c77_secure_db_operation(
+    jsonb_build_object(...),
+    false  -- check_rbac = false
+);
+```
+
+#### "Insufficient permissions"
+
+**Error:**
+```json
+{
+    "success": false,
+    "error": "Insufficient permissions",
+    "required_feature": "secure_db_delete",
+    "user_id": "456"
+}
+```
+
+**Cause:** User doesn't have the required RBAC permission.
+
+**Solution:**
+```sql
+-- Grant the required feature to user's role
+SELECT c77_rbac_grant_feature('user_role', 'secure_db_delete');
+
+-- Or assign user to a role that has the permission
+SELECT c77_rbac_assign_subject('456', 'admin_role', 'global', 'all');
+```
+
+#### "Primary key required for update operation"
+
+**Error:**
+```json
+{
+    "success": false,
+    "error": "Primary key \"id\" required for update operation"
+}
+```
+
+**Cause:** UPDATE operation doesn't include the primary key in the data.
+
+**Solution:**
+```sql
+-- Include primary key in data
+SELECT c77_secure_db_operation(jsonb_build_object(
+    'schema_name', 'myapp',
+    'table_name', 'users',
+    'operation', 'update',
+    'data', jsonb_build_object(
+        'id', 123,           -- Primary key required
+        'name', 'Updated Name'
+    )
+));
+```
+
+### Diagnostic Commands
+
+#### Check Extension Status
+
+```sql
+-- Verify extension is installed
+SELECT extname, extversion FROM pg_extension WHERE extname = 'c77_secure_db';
+
+-- Check health
+SELECT c77_secure_db_health_check();
+
+-- Run security tests
+SELECT c77_secure_db_test_security();
+```
+
+#### Check Schema Registration
+
+```sql
+-- List secure schemas
+SELECT c77_secure_db_manage_secure_schemas('list');
+
+-- Check if triggers are applied
+SELECT 
+    schemaname,
+    tablename,
+    count(*) as trigger_count
+FROM pg_triggers 
+WHERE tgname LIKE 'c77_secure_db_%'
+GROUP BY schemaname, tablename;
+```
+
+#### Analyze Recent Operations
+
+```sql
+-- Check recent operations
+SELECT 
+    operation_type,
+    success,
+    error_message,
+    user_name,
+    created_at
+FROM c77_secure_db_operation_audit 
+WHERE created_at > now() - interval '1 hour'
+ORDER BY created_at DESC
+LIMIT 20;
+
+-- Check for patterns in failures
+SELECT 
+    error_message,
+    count(*) as frequency,
+    array_agg(DISTINCT user_name) as affected_users
+FROM c77_secure_db_operation_audit 
+WHERE success = false 
+    AND created_at > now() - interval '24 hours'
+GROUP BY error_message
+ORDER BY frequency DESC;
+```
+
+#### Debug Token Issues
+
+```sql
+-- Check active tokens
+SELECT 
+    token,
+    session_id,
+    operation_type,
+    created_at,
+    expires_at,
+    used,
+    (expires_at > now()) as is_valid
+FROM c77_secure_db_auth_tokens
+ORDER BY created_at DESC;
+
+-- Clean up if needed
+SELECT c77_secure_db_cleanup_expired_tokens();
+```
+
+### Performance Troubleshooting
+
+#### Slow Operations
+
+```sql
+-- Identify slow operations
+SELECT 
+    operation_type,
+    schema_name,
+    table_name,
+    avg(execution_time_ms) as avg_time,
+    max(execution_time_ms) as max_time,
+    count(*) as operation_count
+FROM c77_secure_db_operation_audit 
+WHERE created_at > now() - interval '24 hours'
+    AND execution_time_ms IS NOT NULL
+GROUP BY operation_type, schema_name, table_name
+HAVING avg(execution_time_ms) > 100
+ORDER BY avg_time DESC;
+
+-- Check for missing indexes
+SELECT 
+    schemaname,
+    tablename,
+    attname,
+    n_distinct,
+    correlation
+FROM pg_stats 
+WHERE schemaname IN (
+    SELECT schema_name FROM c77_secure_db_secure_schemas
+)
+AND (n_distinct > 100 OR correlation < 0.1);
+```
+
+#### Hash Verification Performance
+
+```sql
+-- Test hash calculation performance
+DO $
+DECLARE
+    start_time TIMESTAMP;
+    end_time TIMESTAMP;
+    test_data JSONB := '{"name": "Test User", "email": "test@example.com", "description": "This is a test record with some data"}';
+    calculated_hash TEXT;
+BEGIN
+    start_time := clock_timestamp();
+    
+    -- Calculate hash 1000 times
+    FOR i IN 1..1000 LOOP
+        calculated_hash := c77_secure_db_calculate_content_hash('myapp', 'users', test_data);
+    END LOOP;
+    
+    end_time := clock_timestamp();
+    
+    RAISE NOTICE 'Hash calculation performance: % operations in % ms (avg: % ms per operation)',
+        1000,
+        EXTRACT(milliseconds FROM (end_time - start_time)),
+        EXTRACT(milliseconds FROM (end_time - start_time)) / 1000;
+END $;
+```
+
+## API Reference
+
+### Core Functions
+
+#### c77_secure_db_operation()
+
+**Purpose:** Main function for secure database operations
+
+**Signatures:**
+```sql
+c77_secure_db_operation(p_json_data JSONB) RETURNS JSONB
+c77_secure_db_operation(p_json_data JSONB, p_check_rbac BOOLEAN, p_required_feature TEXT, p_scope_type TEXT, p_scope_id TEXT) RETURNS JSONB
+```
+
+**Parameters:**
+- `p_json_data`: Operation configuration (required)
+- `p_check_rbac`: Enable RBAC checking (default: false)  
+- `p_required_feature`: Required RBAC feature (optional)
+- `p_scope_type`: RBAC scope type (optional)
+- `p_scope_id`: RBAC scope identifier (optional)
+
+**JSON Data Structure:**
+```json
+{
+    "schema_name": "myapp",           // Required: target schema
+    "table_name": "users",           // Required: target table  
+    "operation": "insert",           // Required: insert|update|upsert|delete|soft_delete
+    "data": {                        // Required: operation data
+        "name": "John Doe",
+        "email": "john@example.com"
+    },
+    "primary_key": "id"              // Optional: primary key column (default: "id")
+}
+```
+
+**Response Structure:**
+```json
+{
+    "success": true,
+    "operation": "insert",
+    "schema_name": "myapp",
+    "table_name": "users", 
+    "rows_affected": 1,
+    "content_hash": "a1b2c3d4...",
+    "execution_time_ms": 12,
+    "operation_id": "550e8400-e29b-41d4-a716-446655440000",
+    "rbac_check_performed": false,
+    "timestamp": "2025-01-26T10:30:00Z"
+}
+```
+
+#### c77_secure_db_check_freshness()
+
+**Purpose:** Verify if a record has been tampered with
+
+**Signature:**
+```sql
+c77_secure_db_check_freshness(p_schema_name TEXT, p_table_name TEXT, p_data JSONB) RETURNS JSONB
+```
+
+**Parameters:**
+- `p_schema_name`: Target schema name
+- `p_table_name`: Target table name
+- `p_data`: Record data to verify (must include primary key)
+
+**Example:**
+```sql
+SELECT c77_secure_db_check_freshness(
+    'myapp',
+    'users',
+    '{"id": 1, "name": "John Doe", "email": "john@example.com"}'::jsonb
+);
+```
+
+#### c77_secure_db_verify_content_hashes()
+
+**Purpose:** Verify content hashes for all records in a table
+
+**Signature:**
+```sql
+c77_secure_db_verify_content_hashes(p_schema_name TEXT, p_table_name TEXT, p_fix_mismatches BOOLEAN DEFAULT false, p_batch_size INTEGER DEFAULT 1000) RETURNS JSONB
+```
+
+**Parameters:**
+- `p_schema_name`: Target schema name
+- `p_table_name`: Target table name
+- `p_fix_mismatches`: Whether to fix hash mismatches (default: false)
+- `p_batch_size`: Processing batch size (default: 1000)
+
+### Schema Management Functions
+
+#### c77_secure_db_manage_secure_schemas()
+
+**Purpose:** Manage the registry of secure schemas
+
+**Signature:**
+```sql
+c77_secure_db_manage_secure_schemas(p_operation TEXT, p_schema_name TEXT DEFAULT NULL) RETURNS JSONB
+```
+
+**Operations:**
+- `'list'`: List all secure schemas
+- `'add'`: Add schema to secure registry
+- `'remove'`: Remove schema from secure registry
+
+**Examples:**
+```sql
+-- List secure schemas
+SELECT c77_secure_db_manage_secure_schemas('list');
+
+-- Add schema
+SELECT c77_secure_db_manage_secure_schemas('add', 'myapp');
+
+-- Remove schema  
+SELECT c77_secure_db_manage_secure_schemas('remove', 'myapp');
+```
+
+### Utility Functions
+
+#### c77_secure_db_get_operation_template()
+
+**Purpose:** Generate SQL templates for operations
+
+**Signature:**
+```sql
+c77_secure_db_get_operation_template(p_schema_name TEXT, p_table_name TEXT, p_operation TEXT) RETURNS TEXT
+```
+
+#### c77_secure_db_health_check()
+
+**Purpose:** System health and status check
+
+**Signature:**
+```sql
+c77_secure_db_health_check() RETURNS JSONB
+```
+
+#### c77_secure_db_cleanup_expired_tokens()
+
+**Purpose:** Clean up expired authorization tokens
+
+**Signature:**
+```sql
+c77_secure_db_cleanup_expired_tokens() RETURNS INTEGER
+```
+
+### Testing Functions
+
+#### c77_secure_db_run_all_tests()
+
+**Purpose:** Run comprehensive test suite
+
+**Signature:**
+```sql
+c77_secure_db_run_all_tests() RETURNS JSONB
+```
+
+#### c77_secure_db_test_security()
+
+**Purpose:** Run security-specific tests
+
+**Signature:**
+```sql
+c77_secure_db_test_security() RETURNS JSONB
+```
+
+#### c77_secure_db_test_rbac_integration()
+
+**Purpose:** Test RBAC integration
+
+**Signature:**
+```sql
+c77_secure_db_test_rbac_integration() RETURNS JSONB
+```
+
+## Examples and Use Cases
+
+### E-commerce Platform
+
+```sql
+-- Set up e-commerce schema
+CREATE SCHEMA ecommerce;
+SELECT c77_secure_db_manage_secure_schemas('add', 'ecommerce');
+
+-- Create secure tables
+CREATE TABLE ecommerce.customers (
+    id BIGSERIAL PRIMARY KEY,
+    email TEXT UNIQUE NOT NULL,
+    first_name TEXT,
+    last_name TEXT,
+    phone TEXT,
+    -- Security columns
+    content_hash TEXT,
+    hash_version INTEGER DEFAULT 1,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW(),
+    deleted_at TIMESTAMPTZ
+);
+
+CREATE TABLE ecommerce.orders (
+    id BIGSERIAL PRIMARY KEY,
+    customer_id BIGINT REFERENCES ecommerce.customers(id),
+    total_amount DECIMAL(10,2),
+    status TEXT DEFAULT 'pending',
+    -- Security columns
+    content_hash TEXT,
+    hash_version INTEGER DEFAULT 1,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW(),
+    deleted_at TIMESTAMPTZ
+);
+
+-- RBAC setup for e-commerce
+SELECT c77_rbac_grant_feature('customer_service', 'secure_db_read');
+SELECT c77_rbac_grant_feature('customer_service', 'secure_db_update');
+SELECT c77_rbac_grant_feature('order_manager', 'secure_db_insert');
+SELECT c77_rbac_grant_feature('order_manager', 'secure_db_update');
+SELECT c77_rbac_grant_feature('finance_team', 'secure_db_read');
+
+-- Create customer
+SELECT c77_secure_db_operation(jsonb_build_object(
+    'schema_name', 'ecommerce',
+    'table_name', 'customers',
+    'operation', 'insert',
+    'data', jsonb_build_object(
+        'email', 'customer@example.com',
+        'first_name', 'John',
+        'last_name', 'Doe',
+        'phone', '+1-555-0123'
+    )
+));
+
+-- Create order with RBAC
+SET "c77_rbac.external_id" TO '123';  -- Order manager user
+SELECT c77_secure_db_operation(
+    jsonb_build_object(
+        'schema_name', 'ecommerce',
+        'table_name', 'orders',
+        'operation', 'insert',
+        'data', jsonb_build_object(
+            'customer_id', 1,
+            'total_amount', 99.99,
+            'status', 'confirmed'
+        )
+    ),
+    true,                    -- check_rbac
+    'secure_db_insert'       -- required_feature
+);
+
+-- Update order status
+SELECT c77_secure_db_operation(
+    jsonb_build_object(
+        'schema_name', 'ecommerce',
+        'table_name', 'orders',
+        'operation', 'update',
+        'data', jsonb_build_object(
+            'id', 1,
+            'status', 'shipped'
+        )
+    ),
+    true,
+    'secure_db_update'
+);
+```
+
+### Healthcare System
+
+```sql
+-- Healthcare schema with strict audit requirements
+CREATE SCHEMA healthcare;
+SELECT c77_secure_db_manage_secure_schemas('add', 'healthcare');
+
+CREATE TABLE healthcare.patients (
+    id BIGSERIAL PRIMARY KEY,
+    medical_record_number TEXT UNIQUE NOT NULL,
+    first_name TEXT NOT NULL,
+    last_name TEXT NOT NULL,
+    date_of_birth DATE,
+    ssn TEXT,  -- Sensitive data
+    -- Security columns
+    content_hash TEXT,
+    hash_version INTEGER DEFAULT 1,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW(),
+    deleted_at TIMESTAMPTZ
+);
+
+-- Exclude frequently changing fields from hash
+COMMENT ON COLUMN healthcare.patients.content_hash IS 
+'{"exclude_hash_columns": ["last_access_date", "access_count"]}';
+
+-- RBAC for healthcare
+SELECT c77_rbac_grant_feature('doctor', 'secure_db_insert');
+SELECT c77_rbac_grant_feature('doctor', 'secure_db_update');
+SELECT c77_rbac_grant_feature('doctor', 'secure_db_read');
+SELECT c77_rbac_grant_feature('nurse', 'secure_db_read');
+SELECT c77_rbac_grant_feature('nurse', 'secure_db_update');
+SELECT c77_rbac_grant_feature('admin', 'secure_db_admin');
+
+-- Department-based access
+SELECT c77_rbac_assign_subject('doctor_001', 'doctor', 'department', 'cardiology');
+SELECT c77_rbac_assign_subject('nurse_001', 'nurse', 'department', 'cardiology');
+
+-- Create patient record
+SET "c77_rbac.external_id" TO 'doctor_001';
+SELECT c77_secure_db_operation(
+    jsonb_build_object(
+        'schema_name', 'healthcare',
+        'table_name', 'patients',
+        'operation', 'insert',
+        'data', jsonb_build_object(
+            'medical_record_number', 'MRN-2025-001',
+            'first_name', 'Jane',
+            'last_name', 'Smith',
+            'date_of_birth', '1985-03-15',
+            'ssn', '123-45-6789'
+        )
+    ),
+    true,
+    'secure_db_insert',
+    'department',
+    'cardiology'
+);
+
+-- Regular integrity check for compliance
+SELECT c77_secure_db_verify_content_hashes('healthcare', 'patients');
+
+-- Audit report for compliance
+SELECT 
+    user_name as healthcare_user,
+    operation_type,
+    count(*) as operation_count,
+    min(created_at) as first_access,
+    max(created_at) as last_access
+FROM c77_secure_db_operation_audit 
+WHERE schema_name = 'healthcare'
+    AND created_at > now() - interval '30 days'
+GROUP BY user_name, operation_type
+ORDER BY operation_count DESC;
+```
+
+### Financial Services
+
+```sql
+-- Financial services with high security requirements
+CREATE SCHEMA finance;
+SELECT c77_secure_db_manage_secure_schemas('add', 'finance');
+
+CREATE TABLE finance.accounts (
+    id BIGSERIAL PRIMARY KEY,
+    account_number TEXT UNIQUE NOT NULL,
+    account_type TEXT NOT NULL,
+    balance DECIMAL(15,2) DEFAULT 0.00,
+    customer_id BIGINT,
+    status TEXT DEFAULT 'active',
+    -- Security columns
+    content_hash TEXT,
+    hash_version INTEGER DEFAULT 1,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW(),
+    deleted_at TIMESTAMPTZ
+);
+
+CREATE TABLE finance.transactions (
+    id BIGSERIAL PRIMARY KEY,
+    account_id BIGINT REFERENCES finance.accounts(id),
+    transaction_type TEXT NOT NULL,
+    amount DECIMAL(15,2) NOT NULL,
+    description TEXT,
+    reference_number TEXT UNIQUE,
+    -- Security columns
+    content_hash TEXT,
+    hash_version INTEGER DEFAULT 1,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW(),
+    deleted_at TIMESTAMPTZ
+);
+
+-- Financial RBAC - very restrictive
+SELECT c77_rbac_grant_feature('teller', 'secure_db_read');
+SELECT c77_rbac_grant_feature('teller', 'secure_db_insert');  -- Deposits/withdrawals only
+SELECT c77_rbac_grant_feature('account_manager', 'secure_db_read');
+SELECT c77_rbac_grant_feature('account_manager', 'secure_db_update');
+SELECT c77_rbac_grant_feature('supervisor', 'secure_db_delete');
+SELECT c77_rbac_grant_feature('auditor', 'secure_db_admin');
+
+-- Branch-based access control
+SELECT c77_rbac_assign_subject('teller_001', 'teller', 'branch', 'downtown');
+SELECT c77_rbac_assign_subject('manager_001', 'account_manager', 'branch', 'downtown');
+
+-- Record transaction with full audit trail
+SET "c77_rbac.external_id" TO 'teller_001';
+SELECT c77_secure_db_operation(
+    jsonb_build_object(
+        'schema_name', 'finance',
+        'table_name', 'transactions',
+        'operation', 'insert',
+        'data', jsonb_build_object(
+            'account_id', 1001,
+            'transaction_type', 'deposit',
+            'amount', 500.00,
+            'description', 'Cash deposit',
+            'reference_number', 'TXN-' || extract(epoch from now())::bigint
+        )
+    ),
+    true,
+    'secure_db_insert',
+    'branch',
+    'downtown'
+);
+
+-- Daily integrity verification for financial data
+DO $
+DECLARE
+    v_accounts_result JSONB;
+    v_transactions_result JSONB;
+BEGIN
+    -- Verify accounts
+    SELECT c77_secure_db_verify_content_hashes('finance', 'accounts') INTO v_accounts_result;
+    
+    -- Verify transactions  
+    SELECT c77_secure_db_verify_content_hashes('finance', 'transactions') INTO v_transactions_result;
+    
+    -- Alert if any mismatches found
+    IF (v_accounts_result->>'mismatch_count')::INTEGER > 0 THEN
+        RAISE EXCEPTION 'CRITICAL: Account data integrity compromise detected!';
+    END IF;
+    
+    IF (v_transactions_result->>'mismatch_count')::INTEGER > 0 THEN
+        RAISE EXCEPTION 'CRITICAL: Transaction data integrity compromise detected!';
+    END IF;
+    
+    RAISE NOTICE 'Financial data integrity verification passed';
+END $;
+```
+
+---
+
+This comprehensive usage guide covers all aspects of the c77_secure_db extension from basic setup to advanced enterprise scenarios. The document serves as both a tutorial for new users and a reference for experienced developers implementing secure database operations in production environments.
\ No newline at end of file
diff --git a/c77_secure_db--1.0.0.sql b/c77_secure_db--1.0.0.sql
deleted file mode 100644
index 29ab086..0000000
--- a/c77_secure_db--1.0.0.sql
+++ /dev/null
@@ -1,1421 +0,0 @@
--- Extension: c77_secure_db
--- Description: Secure database operations with tamper detection and transaction control
--- Version: 1.0.0
-
--- Requires pgcrypto extension
--- Check if pgcrypto is available
-DO $$
-BEGIN
-    IF NOT EXISTS (
-        SELECT 1 FROM pg_extension WHERE extname = 'pgcrypto'
-    ) THEN
-        RAISE EXCEPTION 'The c77_secure_db extension requires the pgcrypto extension to be installed first.';
-    END IF;
-END
-$$;
-
--- Create secure_schemas table if it doesn't exist
-CREATE TABLE IF NOT EXISTS public.secure_schemas (
-    schema_name text PRIMARY KEY,
-    created_at timestamptz DEFAULT now(),
-    updated_at timestamptz DEFAULT now()
-);
-
--- Add a comment to document the table's purpose
-COMMENT ON TABLE public.secure_schemas IS 'Stores schemas where c77_apply_prevent_triggers should be automatically applied via the c77_auto_apply_prevent_triggers event trigger.';
-
--- Prevent direct modification trigger function
-CREATE OR REPLACE FUNCTION c77_prevent_direct_modification()
-    RETURNS trigger
-    LANGUAGE 'plpgsql'
-    COST 100
-    VOLATILE NOT LEAKPROOF
-AS $BODY$
-BEGIN
-    IF current_setting('myapp.allow_direct_modification', true) = 'true' THEN
-        IF TG_OP = 'DELETE' THEN
-            RETURN OLD;  -- Allow DELETE to proceed
-        END IF;
-        RETURN NEW;  -- Allow INSERT or UPDATE to proceed
-    END IF;
-    RAISE EXCEPTION 'Direct modifications are not allowed. Use the c77_secure_db_operation function instead.';
-END;
-$BODY$;
-
-COMMENT ON FUNCTION c77_prevent_direct_modification() IS 'Trigger function to prevent direct table modifications unless authorized via the myapp.allow_direct_modification setting.';
-
--- Apply prevent triggers function
-CREATE OR REPLACE FUNCTION c77_apply_prevent_triggers(
-	p_schema_name text)
-    RETURNS void
-    LANGUAGE 'plpgsql'
-    COST 100
-    VOLATILE PARALLEL UNSAFE
-AS $BODY$
-DECLARE
-    v_table_name text;
-BEGIN
-    FOR v_table_name IN
-        SELECT table_name
-        FROM information_schema.tables
-        WHERE table_schema = p_schema_name
-        AND table_type = 'BASE TABLE'
-    LOOP
-        EXECUTE format('DROP TRIGGER IF EXISTS c77_prevent_direct_insert ON %I.%I', p_schema_name, v_table_name);
-        EXECUTE format('DROP TRIGGER IF EXISTS c77_prevent_direct_update ON %I.%I', p_schema_name, v_table_name);
-        EXECUTE format('DROP TRIGGER IF EXISTS c77_prevent_direct_delete ON %I.%I', p_schema_name, v_table_name);
-
-        EXECUTE format(
-            'CREATE TRIGGER c77_prevent_direct_insert BEFORE INSERT ON %I.%I ' ||
-            'FOR EACH ROW EXECUTE FUNCTION c77_prevent_direct_modification()',
-            p_schema_name, v_table_name
-        );
-        EXECUTE format(
-            'CREATE TRIGGER c77_prevent_direct_update BEFORE UPDATE ON %I.%I ' ||
-            'FOR EACH ROW EXECUTE FUNCTION c77_prevent_direct_modification()',
-            p_schema_name, v_table_name
-        );
-        EXECUTE format(
-            'CREATE TRIGGER c77_prevent_direct_delete BEFORE DELETE ON %I.%I ' ||
-            'FOR EACH ROW EXECUTE FUNCTION c77_prevent_direct_modification()',
-            p_schema_name, v_table_name
-        );
-    END LOOP;
-END;
-$BODY$;
-
-COMMENT ON FUNCTION c77_apply_prevent_triggers(text) IS 'Applies prevention triggers to all tables in the specified schema.';
-
--- Auto apply triggers function
-CREATE OR REPLACE FUNCTION c77_auto_apply_prevent_triggers()
-    RETURNS event_trigger
-    LANGUAGE 'plpgsql'
-    COST 100
-    VOLATILE NOT LEAKPROOF
-AS $BODY$
-DECLARE
-    v_obj record;
-    v_schema_name text;
-    v_designated_schema text;
-BEGIN
-    -- Get the schema of the table being modified
-    FOR v_obj IN
-        SELECT * FROM pg_event_trigger_ddl_commands()
-        WHERE object_type = 'table'
-    LOOP
-        v_schema_name := v_obj.schema_name;
-
-        -- Check if the schema is in the secure_schemas table
-        FOR v_designated_schema IN
-            SELECT schema_name
-            FROM public.secure_schemas
-        LOOP
-            IF v_schema_name = v_designated_schema THEN
-                PERFORM c77_apply_prevent_triggers(v_schema_name);
-                RAISE NOTICE 'Applied c77_apply_prevent_triggers to schema % due to DDL change on table %.%.',
-                    v_schema_name, v_schema_name, v_obj.object_identity;
-            END IF;
-        END LOOP;
-    END LOOP;
-END;
-$BODY$;
-
-COMMENT ON FUNCTION c77_auto_apply_prevent_triggers() IS 'Event trigger function to automatically apply prevention triggers when tables are created or altered in secure schemas.';
-
--- Calculate content hash function
-CREATE OR REPLACE FUNCTION c77_calculate_content_hash(
-	p_schema_name text,
-	p_table_name text,
-	p_data jsonb)
-    RETURNS text
-    LANGUAGE 'plpgsql'
-    COST 100
-    VOLATILE PARALLEL UNSAFE
-AS $BODY$
-DECLARE
-    v_exclude_hash_columns text[] := ARRAY['id', 'content_hash', 'created_at', 'updated_at', 'deleted_at', 'hash_version'];
-    v_column_comment text;
-    v_temp_exclude_columns text[];
-    v_content_hash text;
-BEGIN
-    -- Get exclude_hash_columns from the content_hash column comment
-    IF EXISTS (
-        SELECT 1 
-        FROM information_schema.columns 
-        WHERE table_schema = p_schema_name 
-        AND table_name = p_table_name 
-        AND column_name = 'content_hash'
-    ) THEN
-        SELECT col_description(
-            format('%I.%I', p_schema_name, p_table_name)::regclass::oid,
-            (
-                SELECT attnum 
-                FROM pg_attribute 
-                WHERE attrelid = format('%I.%I', p_schema_name, p_table_name)::regclass 
-                AND attname = 'content_hash'
-            )
-        ) INTO v_column_comment;
-
-        IF v_column_comment IS NOT NULL THEN
-            BEGIN
-                IF jsonb_typeof(v_column_comment::jsonb) = 'object' AND 
-                   (v_column_comment::jsonb)->>'exclude_hash_columns' IS NOT NULL THEN
-                    v_temp_exclude_columns := ARRAY(
-                        SELECT jsonb_array_elements_text(v_column_comment::jsonb->'exclude_hash_columns')
-                    );
-                    v_exclude_hash_columns := v_exclude_hash_columns || v_temp_exclude_columns;
-                END IF;
-            EXCEPTION WHEN OTHERS THEN
-                -- Ignore invalid comment JSON
-                NULL;
-            END;
-        END IF;
-    END IF;
-
-    -- Calculate the hash using SHA-256
-    SELECT encode(sha256(convert_to(
-        string_agg(
-            CASE WHEN key = ANY(v_exclude_hash_columns) THEN ''
-                 ELSE COALESCE(value::text, '') END,
-            ''  -- Use a text delimiter
-        ),
-        'UTF8'
-    )), 'hex')
-    INTO v_content_hash
-    FROM jsonb_each(p_data);
-
-    RETURN v_content_hash;
-END;
-$BODY$;
-
-COMMENT ON FUNCTION c77_calculate_content_hash(text, text, jsonb) IS 'Calculates a SHA-256 hash of record data for tamper detection, excluding special columns.';
-
--- Check freshness function
-CREATE OR REPLACE FUNCTION c77_check_freshness(
-	p_schema_name text,
-	p_table_name text,
-	p_data jsonb)
-    RETURNS jsonb
-    LANGUAGE 'plpgsql'
-    COST 100
-    STABLE PARALLEL SAFE 
-AS $BODY$
-DECLARE
-    v_stored_hash text;
-    v_calculated_hash text;
-    v_id text;
-    v_hash_version integer;
-    v_is_fresh boolean;
-    v_special_columns text[] := ARRAY['content_hash'];  -- Start with the minimum required special column
-    v_data_cleaned jsonb;
-    v_column text;
-    v_has_created_at boolean;
-    v_has_updated_at boolean;
-    v_has_deleted_at boolean;
-    v_has_hash_version boolean;
-    v_query text;
-BEGIN
-    -- Check for the existence of special columns
-    v_has_created_at := EXISTS (
-        SELECT 1 FROM information_schema.columns 
-        WHERE table_schema = p_schema_name 
-        AND table_name = p_table_name 
-        AND column_name = 'created_at'
-    );
-    v_has_updated_at := EXISTS (
-        SELECT 1 FROM information_schema.columns 
-        WHERE table_schema = p_schema_name 
-        AND table_name = p_table_name 
-        AND column_name = 'updated_at'
-    );
-    v_has_deleted_at := EXISTS (
-        SELECT 1 FROM information_schema.columns 
-        WHERE table_schema = p_schema_name 
-        AND table_name = p_table_name 
-        AND column_name = 'deleted_at'
-    );
-    v_has_hash_version := EXISTS (
-        SELECT 1 FROM information_schema.columns 
-        WHERE table_schema = p_schema_name 
-        AND table_name = p_table_name 
-        AND column_name = 'hash_version'
-    );
-
-    -- Build the special columns array dynamically
-    IF v_has_created_at THEN
-        v_special_columns := v_special_columns || ARRAY['created_at'];
-    END IF;
-    IF v_has_updated_at THEN
-        v_special_columns := v_special_columns || ARRAY['updated_at'];
-    END IF;
-    IF v_has_deleted_at THEN
-        v_special_columns := v_special_columns || ARRAY['deleted_at'];
-    END IF;
-    IF v_has_hash_version THEN
-        v_special_columns := v_special_columns || ARRAY['hash_version'];
-    END IF;
-
-    -- Extract the primary key (id) from the input data
-    v_id := p_data->>'id';
-    IF v_id IS NULL THEN
-        RETURN jsonb_build_object(
-            'success', false,
-            'error', 'Primary key "id" missing in input data',
-            'timestamp', now()
-        );
-    END IF;
-
-    -- Clean the input data by removing special columns
-    v_data_cleaned := p_data;
-    FOREACH v_column IN ARRAY v_special_columns
-    LOOP
-        v_data_cleaned := v_data_cleaned - v_column;
-    END LOOP;
-
-    -- Calculate the content hash of the input data
-    v_calculated_hash := c77_calculate_content_hash(p_schema_name, p_table_name, v_data_cleaned);
-
-    -- Build the query dynamically
-    v_query := format(
-        'SELECT content_hash %s FROM %I.%I WHERE id = $1',
-        CASE WHEN v_has_hash_version THEN ', hash_version' ELSE '' END,
-        p_schema_name,
-        p_table_name
-    );
-    IF v_has_deleted_at THEN
-        v_query := v_query || ' AND deleted_at IS NULL';
-    END IF;
-
-    -- Look up the stored hash and hash_version (if it exists) in the table
-    IF v_has_hash_version THEN
-        EXECUTE v_query
-        INTO v_stored_hash, v_hash_version
-        USING v_id::integer;
-    ELSE
-        EXECUTE v_query
-        INTO v_stored_hash
-        USING v_id::integer;
-        v_hash_version := NULL;  -- Set to NULL if hash_version column doesn't exist
-    END IF;
-
-    -- Check if the record exists
-    IF v_stored_hash IS NULL THEN
-        RETURN jsonb_build_object(
-            'success', false,
-            'error', 'Record with id ' || v_id || ' not found or has been deleted',
-            'timestamp', now()
-        );
-    END IF;
-
-    -- Compare the hashes
-    v_is_fresh := (v_stored_hash = v_calculated_hash);
-
-    -- Return the result
-    RETURN jsonb_build_object(
-        'success', true,
-        'id', v_id,
-        'fresh', v_is_fresh,
-        'stored_hash', v_stored_hash,
-        'calculated_hash', v_calculated_hash,
-        'hash_version', v_hash_version,
-        'timestamp', now()
-    );
-EXCEPTION WHEN OTHERS THEN
-    RETURN jsonb_build_object(
-        'success', false,
-        'error', SQLERRM,
-        'error_code', SQLSTATE,
-        'timestamp', now()
-    );
-END;
-$BODY$;
-
-COMMENT ON FUNCTION c77_check_freshness(text, text, jsonb) IS 'Verifies if a record has been modified by comparing stored and calculated content hashes.';
-
--- Check freshness bulk function
-CREATE OR REPLACE FUNCTION c77_check_freshness_bulk(
-	p_schema_name text,
-	p_table_name text,
-	p_data jsonb)
-    RETURNS jsonb
-    LANGUAGE 'plpgsql'
-    COST 100
-    STABLE PARALLEL SAFE 
-AS $BODY$
-DECLARE
-    v_record jsonb;
-    v_results jsonb := '[]'::jsonb;
-    v_result jsonb;
-BEGIN
-    -- Validate that p_data is a JSONB array
-    IF jsonb_typeof(p_data) != 'array' THEN
-        RETURN jsonb_build_object(
-            'success', false,
-            'error', 'Input data must be a JSONB array',
-            'timestamp', now()
-        );
-    END IF;
-
-    -- Loop through each record in the input array
-    FOR v_record IN
-        SELECT jsonb_array_elements(p_data)
-    LOOP
-        -- Call check_freshness for each record
-        v_result := c77_check_freshness(p_schema_name, p_table_name, v_record);
-
-        -- Append the result to the results array
-        v_results := v_results || v_result;
-    END LOOP;
-
-    -- Return the results
-    RETURN jsonb_build_object(
-        'success', true,
-        'results', v_results,
-        'timestamp', now()
-    );
-EXCEPTION WHEN OTHERS THEN
-    RETURN jsonb_build_object(
-        'success', false,
-        'error', SQLERRM,
-        'error_code', SQLSTATE,
-        'timestamp', now()
-    );
-END;
-$BODY$;
-
-COMMENT ON FUNCTION c77_check_freshness_bulk(text, text, jsonb) IS 'Verifies if multiple records have been modified by comparing stored and calculated content hashes.';
-
--- FUNCTION: public.c77_secure_db_operation(jsonb)
-CREATE OR REPLACE FUNCTION public.c77_secure_db_operation(
-	p_json_data jsonb)
-    RETURNS jsonb
-    LANGUAGE 'plpgsql'
-    COST 100
-    VOLATILE PARALLEL UNSAFE
-AS $BODY$
-DECLARE
-    v_schema_name text;
-    v_table_name text;
-    v_operation text;
-    v_primary_key text;
-    v_data jsonb;
-    v_data_cleaned jsonb;
-    v_exclude_hash_columns text[] := ARRAY['id', 'content_hash', 'created_at', 'updated_at', 'deleted_at', 'hash_version'];
-    v_special_columns text[] := ARRAY['content_hash', 'created_at', 'updated_at', 'deleted_at', 'hash_version'];
-    v_columns text[];
-    v_values text[];
-    v_update_pairs text[];
-    v_content_hash text;
-    v_hash_version integer := 1;
-    v_result jsonb;
-    v_row_count int;
-    v_post_function text;
-    v_exists boolean;
-    v_unique_columns text[];
-    v_unique_constraint_name text;
-    v_primary_key_columns text[];
-    v_primary_key_constraint_name text;
-    v_conflict_target text;
-    v_conflict_columns text[];
-    v_has_created_at boolean;
-    v_has_updated_at boolean;
-    v_has_deleted_at boolean;
-    v_has_hash_version boolean;
-    v_temp_exclude_columns text[];
-    v_unique_values text[];
-    v_column text;
-    v_primary_key_type text;
-BEGIN
-    PERFORM set_config('myapp.allow_direct_modification', 'true', true);
-
-    v_schema_name := p_json_data->>'schema_name';
-    v_table_name := p_json_data->>'table_name';
-    v_operation := lower(p_json_data->>'operation');
-    v_primary_key := p_json_data->>'primary_key';
-    v_data := p_json_data->>'data';
-    v_post_function := p_json_data->>'post_function';
-
-    IF p_json_data->>'exclude_hash_columns' IS NOT NULL THEN
-        BEGIN
-            v_temp_exclude_columns := ARRAY(SELECT jsonb_array_elements_text(p_json_data->'exclude_hash_columns'));
-            v_exclude_hash_columns := v_exclude_hash_columns || v_temp_exclude_columns;
-        EXCEPTION WHEN OTHERS THEN
-            RETURN jsonb_build_object(
-                'success', false,
-                'error', 'Invalid exclude_hash_columns in input JSON',
-                'error_code', SQLSTATE,
-                'timestamp', now()
-            );
-        END;
-    END IF;
-
-    IF v_schema_name IS NULL OR v_table_name IS NULL OR v_operation IS NULL THEN
-        RETURN jsonb_build_object(
-            'success', false,
-            'error', 'Missing required fields: schema_name, table_name, or operation',
-            'timestamp', now()
-        );
-    END IF;
-
-    IF v_primary_key IS NOT NULL THEN
-        SELECT data_type
-        INTO v_primary_key_type
-        FROM information_schema.columns
-        WHERE table_schema = v_schema_name
-        AND table_name = v_table_name
-        AND column_name = v_primary_key;
-    END IF;
-
-    v_has_created_at := EXISTS (
-        SELECT 1 FROM information_schema.columns 
-        WHERE table_schema = v_schema_name AND table_name = v_table_name AND column_name = 'created_at'
-    );
-    v_has_updated_at := EXISTS (
-        SELECT 1 FROM information_schema.columns 
-        WHERE table_schema = v_schema_name AND table_name = v_table_name AND column_name = 'updated_at'
-    );
-    v_has_deleted_at := EXISTS (
-        SELECT 1 FROM information_schema.columns 
-        WHERE table_schema = v_schema_name AND table_name = v_table_name AND column_name = 'deleted_at'
-    );
-    v_has_hash_version := EXISTS (
-        SELECT 1 FROM information_schema.columns 
-        WHERE table_schema = v_schema_name AND table_name = v_table_name AND column_name = 'hash_version'
-    );
-
-    v_data_cleaned := v_data;
-    FOREACH v_column IN ARRAY v_special_columns
-    LOOP
-        v_data_cleaned := v_data_cleaned - v_column;
-    END LOOP;
-
-    SELECT ARRAY_agg(key),
-           ARRAY_agg(quote_literal(v_data->>key))
-    INTO v_columns, v_values
-    FROM jsonb_object_keys(v_data) AS key
-    WHERE key != ALL(v_special_columns);
-
-    IF EXISTS (
-        SELECT 1 
-        FROM information_schema.columns 
-        WHERE table_schema = v_schema_name 
-        AND table_name = v_table_name 
-        AND column_name = 'content_hash'
-    ) AND v_operation IN ('insert', 'update', 'upsert') THEN
-        v_content_hash := public.c77_calculate_content_hash(v_schema_name, v_table_name, v_data_cleaned);
-
-        v_columns := v_columns || ARRAY['content_hash'];
-        v_values := v_values || ARRAY[quote_literal(v_content_hash)];
-
-        IF v_has_hash_version THEN
-            v_columns := v_columns || ARRAY['hash_version'];
-            v_values := v_values || ARRAY[quote_literal(v_hash_version)];
-        END IF;
-    END IF;
-
-    IF v_has_created_at AND v_operation IN ('insert', 'upsert') THEN
-        v_columns := v_columns || ARRAY['created_at'];
-        v_values := v_values || ARRAY[quote_literal(now())];
-    END IF;
-
-    IF v_has_updated_at AND v_operation IN ('insert', 'update', 'upsert') THEN
-        v_columns := v_columns || ARRAY['updated_at'];
-        v_values := v_values || ARRAY[quote_literal(now())];
-    END IF;
-
-    CASE v_operation
-        WHEN 'upsert' THEN
-            -- First, try to find a unique constraint
-            SELECT c.conname, ARRAY_agg(a.attname::text)
-            INTO v_unique_constraint_name, v_unique_columns
-            FROM pg_constraint c
-            JOIN pg_attribute a ON a.attrelid = c.conrelid AND a.attnum = ANY(c.conkey)
-            WHERE c.conrelid = format('%I.%I', v_schema_name, v_table_name)::regclass
-            AND c.contype = 'u'
-            GROUP BY c.conname
-            LIMIT 1;
-
-            IF v_unique_columns IS NOT NULL THEN
-                v_conflict_columns := v_unique_columns;
-                v_conflict_target := format('ON CONFLICT (%s)', array_to_string(ARRAY(
-                    SELECT format('%I', unnest) FROM unnest(v_unique_columns)
-                ), ','));
-            ELSE
-                -- Fallback to primary key if no unique constraint is found
-                SELECT c.conname, ARRAY_agg(a.attname::text)
-                INTO v_primary_key_constraint_name, v_primary_key_columns
-                FROM pg_constraint c
-                JOIN pg_attribute a ON a.attrelid = c.conrelid AND a.attnum = ANY(c.conkey)
-                WHERE c.conrelid = format('%I.%I', v_schema_name, v_table_name)::regclass
-                AND c.contype = 'p'
-                GROUP BY c.conname
-                LIMIT 1;
-
-                IF v_primary_key_columns IS NULL THEN
-                    RETURN jsonb_build_object(
-                        'success', false,
-                        'error', 'No primary key or unique constraint found on table for upsert operation',
-                        'timestamp', now()
-                    );
-                END IF;
-
-                v_conflict_columns := v_primary_key_columns;
-                v_conflict_target := format('ON CONFLICT (%s)', array_to_string(ARRAY(
-                    SELECT format('%I', unnest) FROM unnest(v_primary_key_columns)
-                ), ','));
-
-            END IF;
-
-            -- Debug: Log the conflict columns and input columns
-            RAISE NOTICE 'Conflict columns: %', v_conflict_columns;
-            RAISE NOTICE 'Input columns: %', v_columns;
-
-            -- Validate that all conflict columns are present in the input data
-            IF NOT (
-                SELECT EVERY(column_name = ANY(v_columns))
-                FROM unnest(v_conflict_columns) AS column_name
-            ) THEN
-                RETURN jsonb_build_object(
-                    'success', false,
-                    'error', 'Input data missing required conflict columns: ' || array_to_string(v_conflict_columns, ', '),
-                    'timestamp', now(),
-                    'debug', jsonb_build_object(
-                        'conflict_columns', v_conflict_columns,
-                        'input_columns', v_columns
-                    )
-                );
-            END IF;
-
-            v_unique_values := ARRAY(
-                SELECT v_data->>col
-                FROM unnest(v_conflict_columns) AS col
-            );
-
-            v_update_pairs := ARRAY(
-                SELECT format('%I = %s', key, quote_literal(v_data->>key))
-                FROM jsonb_object_keys(v_data) AS key
-                WHERE key != ALL(v_conflict_columns) AND key != ALL(v_special_columns)
-            );
-
-            IF v_has_updated_at THEN
-                v_update_pairs := v_update_pairs || ARRAY[format('updated_at = %L', now())];
-            END IF;
-            IF v_content_hash IS NOT NULL THEN
-                v_update_pairs := v_update_pairs || ARRAY[format('content_hash = %L', v_content_hash)];
-            END IF;
-            IF v_has_hash_version THEN
-                v_update_pairs := v_update_pairs || ARRAY[format('hash_version = %L', v_hash_version)];
-            END IF;
-
-            EXECUTE format(
-                'INSERT INTO %I.%I (%s) VALUES (%s) ' ||
-                '%s DO UPDATE SET %s RETURNING *',
-                v_schema_name,
-                v_table_name,
-                array_to_string(v_columns, ','),
-                array_to_string(v_values, ','),
-                v_conflict_target,
-                array_to_string(v_update_pairs, ',')
-            );
-            GET DIAGNOSTICS v_row_count = ROW_COUNT;
-
-        WHEN 'insert' THEN
-            EXECUTE format(
-                'INSERT INTO %I.%I (%s) VALUES (%s) ON CONFLICT DO NOTHING RETURNING *',
-                v_schema_name,
-                v_table_name,
-                array_to_string(v_columns, ','),
-                array_to_string(v_values, ',')
-            );
-            GET DIAGNOSTICS v_row_count = ROW_COUNT;
-
-        WHEN 'update' THEN
-            IF v_primary_key IS NULL THEN
-                RETURN jsonb_build_object(
-                    'success', false,
-                    'error', 'Primary key required for update operation',
-                    'timestamp', now()
-                );
-            END IF;
-
-            v_update_pairs := ARRAY(
-                SELECT format('%I = %s', key, quote_literal(v_data->>key))
-                FROM jsonb_object_keys(v_data) AS key
-                WHERE key != ALL(v_special_columns) AND key != v_primary_key
-            );
-            IF v_has_updated_at THEN
-                v_update_pairs := v_update_pairs || ARRAY[format('updated_at = %L', now())];
-            END IF;
-            IF v_content_hash IS NOT NULL THEN
-                v_update_pairs := v_update_pairs || ARRAY[format('content_hash = %L', v_content_hash)];
-            END IF;
-            IF v_has_hash_version THEN
-                v_update_pairs := v_update_pairs || ARRAY[format('hash_version = %L', v_hash_version)];
-            END IF;
-            EXECUTE format(
-                'UPDATE %I.%I SET %s WHERE %I = ($1)::%s RETURNING *',
-                v_schema_name,
-                v_table_name,
-                array_to_string(v_update_pairs, ','),
-                v_primary_key,
-                v_primary_key_type
-            )
-            USING (v_data->>v_primary_key);
-            GET DIAGNOSTICS v_row_count = ROW_COUNT;
-
-        WHEN 'delete' THEN
-            IF v_primary_key IS NULL THEN
-                RETURN jsonb_build_object(
-                    'success', false,
-                    'error', 'Primary key required for delete operation',
-                    'timestamp', now()
-                );
-            END IF;
-
-            IF v_has_deleted_at THEN
-                v_update_pairs := ARRAY[format('deleted_at = %L', now())];
-                IF v_has_updated_at THEN
-                    v_update_pairs := v_update_pairs || ARRAY[format('updated_at = %L', now())];
-                END IF;
-
-                EXECUTE format(
-                    'UPDATE %I.%I SET %s WHERE %I = ($1)::%s AND deleted_at IS NULL RETURNING *',
-                    v_schema_name,
-                    v_table_name,
-                    array_to_string(v_update_pairs, ','),
-                    v_primary_key,
-                    v_primary_key_type
-                )
-                USING (v_data->>v_primary_key);
-                GET DIAGNOSTICS v_row_count = ROW_COUNT;
-
-                IF v_row_count = 0 THEN
-                    RETURN jsonb_build_object(
-                        'success', false,
-                        'error', 'Record with ' || v_primary_key || ' = ' || (v_data->>v_primary_key) || ' not found or already deleted',
-                        'timestamp', now()
-                    );
-                END IF;
-            ELSE
-                EXECUTE format(
-                    'DELETE FROM %I.%I WHERE %I = ($1)::%s',
-                    v_schema_name,
-                    v_table_name,
-                    v_primary_key,
-                    v_primary_key_type
-                )
-                USING (v_data->>v_primary_key);
-                GET DIAGNOSTICS v_row_count = ROW_COUNT;
-
-                IF v_row_count = 0 THEN
-                    RETURN jsonb_build_object(
-                        'success', false,
-                        'error', 'Record with ' || v_primary_key || ' = ' || (v_data->>v_primary_key) || ' not found',
-                        'timestamp', now()
-                    );
-                END IF;
-            END IF;
-
-        WHEN 'hard_delete' THEN
-            IF v_primary_key IS NULL THEN
-                RETURN jsonb_build_object(
-                    'success', false,
-                    'error', 'Primary key required for hard_delete operation',
-                    'timestamp', now()
-                );
-            END IF;
-
-            EXECUTE format(
-                'DELETE FROM %I.%I WHERE %I = ($1)::%s',
-                v_schema_name,
-                v_table_name,
-                v_primary_key,
-                v_primary_key_type
-            )
-            USING (v_data->>v_primary_key);
-            GET DIAGNOSTICS v_row_count = ROW_COUNT;
-
-            IF v_row_count = 0 THEN
-                RETURN jsonb_build_object(
-                    'success', false,
-                    'error', 'Record with ' || v_primary_key || ' = ' || (v_data->>v_primary_key) || ' not found',
-                    'timestamp', now()
-                );
-            END IF;
-
-        ELSE
-            RETURN jsonb_build_object(
-                'success', false,
-                'error', 'Invalid operation specified',
-                'timestamp', now()
-            );
-    END CASE;
-
-    IF v_row_count > 0 AND v_post_function IS NOT NULL THEN
-        EXECUTE format(
-            'SELECT %I(%L::jsonb)',
-            v_post_function,
-            v_data::text
-        );
-    END IF;
-
-    v_result := jsonb_build_object(
-        'success', true,
-        'operation', v_operation,
-        'schema_name', v_schema_name,
-        'table_name', v_table_name,
-        'rows_affected', v_row_count,
-        'timestamp', now()
-    );
-
-    IF v_content_hash IS NOT NULL THEN
-        v_result := v_result || jsonb_build_object('content_hash', v_content_hash);
-    END IF;
-
-    IF v_post_function IS NOT NULL THEN
-        v_result := v_result || jsonb_build_object('post_function_executed', true);
-    END IF;
-
-    IF v_operation = 'upsert' AND v_conflict_columns IS NOT NULL THEN
-        v_result := v_result || jsonb_build_object(
-            'unique_constraint_used', COALESCE(v_unique_constraint_name, v_primary_key_constraint_name),
-            'unique_columns', v_conflict_columns,
-            'unique_values', v_unique_values
-        );
-    END IF;
-
-    IF cardinality(v_exclude_hash_columns) > 5 THEN
-        v_result := v_result || jsonb_build_object(
-            'exclude_hash_columns', v_exclude_hash_columns
-        );
-    END IF;
-
-    PERFORM set_config('myapp.allow_direct_modification', 'false', true);
-
-    RETURN v_result;
-
-EXCEPTION WHEN OTHERS THEN
-
-    PERFORM set_config('myapp.allow_direct_modification', 'false', true);
-    RETURN jsonb_build_object(
-        'success', false,
-        'error', SQLERRM,
-        'error_code', SQLSTATE,
-        'timestamp', now()
-    );
-END;
-$BODY$;
-
-
-
--- FUNCTION: public.c77_verify_content_hashes(text, text, boolean, integer)
-CREATE OR REPLACE FUNCTION public.c77_verify_content_hashes(
-	p_schema_name text,
-	p_table_name text,
-	p_fix_mismatches boolean DEFAULT false,
-	p_batch_size integer DEFAULT 1000)
-    RETURNS jsonb
-    LANGUAGE 'plpgsql'
-    COST 100
-    VOLATILE PARALLEL UNSAFE
-AS $BODY$
-DECLARE
-    v_exclude_columns text[] := ARRAY['id', 'content_hash', 'created_at', 'updated_at', 'deleted_at', 'hash_version'];
-    v_special_columns text[] := ARRAY['content_hash', 'created_at', 'updated_at', 'deleted_at', 'hash_version'];
-    v_columns text[];
-    v_primary_key text;
-    v_record record;
-    v_cursor refcursor;
-    v_data jsonb;
-    v_data_cleaned jsonb;
-    v_calculated_hash text;
-    v_stored_hash text;
-    v_mismatches jsonb[] := '{}';
-    v_mismatch jsonb;
-    v_total_records int := 0;
-    v_mismatch_count int := 0;
-    v_column text;
-    v_query text;
-    v_has_content_hash boolean;
-    v_has_hash_version boolean;
-    v_hash_version int;
-    v_batch_count int := 0;
-    v_row_count int;
-BEGIN
-    -- Check if the table exists
-    IF NOT EXISTS (
-        SELECT 1
-        FROM information_schema.tables
-        WHERE table_schema = p_schema_name
-        AND table_name = p_table_name
-    ) THEN
-        RETURN jsonb_build_object(
-            'success', false,
-            'error', format('Table %I.%I does not exist', p_schema_name, p_table_name),
-            'timestamp', now()
-        );
-    END IF;
-
-    -- Check if the table has a content_hash column
-    v_has_content_hash := EXISTS (
-        SELECT 1
-        FROM information_schema.columns
-        WHERE table_schema = p_schema_name
-        AND table_name = p_table_name
-        AND column_name = 'content_hash'
-    );
-
-    IF NOT v_has_content_hash THEN
-        RETURN jsonb_build_object(
-            'success', false,
-            'error', format('Table %I.%I does not have a content_hash column', p_schema_name, p_table_name),
-            'timestamp', now()
-        );
-    END IF;
-
-    -- Check if the table has a hash_version column
-    v_has_hash_version := EXISTS (
-        SELECT 1
-        FROM information_schema.columns
-        WHERE table_schema = p_schema_name
-        AND table_name = p_table_name
-        AND column_name = 'hash_version'
-    );
-
-    -- Get the primary key column
-    SELECT a.attname
-    INTO v_primary_key
-    FROM pg_constraint c
-    JOIN pg_attribute a ON a.attrelid = c.conrelid AND a.attnum = ANY(c.conkey)
-    WHERE c.conrelid = format('%I.%I', p_schema_name, p_table_name)::regclass
-    AND c.contype = 'p'
-    LIMIT 1;
-
-    IF v_primary_key IS NULL THEN
-        RETURN jsonb_build_object(
-            'success', false,
-            'error', format('Table %I.%I does not have a primary key', p_schema_name, p_table_name),
-            'timestamp', now()
-        );
-    END IF;
-
-    -- Get all columns except excluded ones
-    SELECT ARRAY_agg(column_name)
-    INTO v_columns
-    FROM information_schema.columns
-    WHERE table_schema = p_schema_name
-    AND table_name = p_table_name
-    AND column_name != ALL(v_exclude_columns);
-
-    IF v_columns IS NULL THEN
-        RETURN jsonb_build_object(
-            'success', false,
-            'error', format('Table %I.%I has no columns to hash after excluding %s', p_schema_name, p_table_name, v_exclude_columns),
-            'timestamp', now()
-        );
-    END IF;
-
-    -- Set myapp.allow_direct_modification to 'true' to allow updates
-    PERFORM set_config('myapp.allow_direct_modification', 'true', true);
-
-    -- Construct the query to fetch all records, explicitly including the primary key
-    v_query := format(
-        'SELECT %I, %s, content_hash%s FROM %I.%I ORDER BY %I',
-        v_primary_key,
-        array_to_string(ARRAY(
-            SELECT format('%I', col)
-            FROM unnest(v_columns) AS col
-        ), ','),
-        CASE WHEN v_has_hash_version THEN ', hash_version' ELSE '' END,
-        p_schema_name,
-        p_table_name,
-        v_primary_key
-    );
-
-    -- Open a cursor to iterate through the records
-    OPEN v_cursor FOR EXECUTE v_query;
-
-    LOOP
-        FETCH v_cursor INTO v_record;
-        EXIT WHEN NOT FOUND;
-
-        v_total_records := v_total_records + 1;
-        v_batch_count := v_batch_count + 1;
-
-        -- Convert the record to JSONB
-        v_data := row_to_json(v_record)::jsonb;
-
-        -- Remove special columns
-        v_data_cleaned := v_data;
-        FOREACH v_column IN ARRAY v_special_columns
-        LOOP
-            v_data_cleaned := v_data_cleaned - v_column;
-        END LOOP;
-
-        -- Remove the primary key
-        v_data_cleaned := v_data_cleaned - v_primary_key;
-
-        -- Recalculate the content_hash
-        v_calculated_hash := public.c77_calculate_content_hash(p_schema_name, p_table_name, v_data_cleaned);
-
-        -- Get the stored content_hash
-        v_stored_hash := v_data->>'content_hash';
-
-        -- Compare the hashes
-        IF v_calculated_hash != v_stored_hash THEN
-            v_mismatch_count := v_mismatch_count + 1;
-
-            -- Build the mismatch report
-            v_mismatch := jsonb_build_object(
-                'primary_key', v_data->>v_primary_key,
-                'stored_hash', v_stored_hash,
-                'calculated_hash', v_calculated_hash,
-                'data', v_data_cleaned
-            );
-
-            -- If the table has a hash_version, include it
-            IF v_has_hash_version THEN
-                v_mismatch := v_mismatch || jsonb_build_object('hash_version', v_data->>'hash_version');
-            END IF;
-
-            v_mismatches := v_mismatches || v_mismatch;
-
-            -- If p_fix_mismatches is true, update the content_hash
-            IF p_fix_mismatches THEN
-                -- Get the hash_version if it exists
-                IF v_has_hash_version THEN
-                    v_hash_version := (v_data->>'hash_version')::int;
-                ELSE
-                    v_hash_version := 1;
-                END IF;
-
-                RAISE NOTICE 'Updating record with % = %', v_primary_key, v_data->>v_primary_key;
-
-                -- Update the record with the correct content_hash
-                EXECUTE format(
-                    'UPDATE %I.%I SET content_hash = $1, hash_version = $2 WHERE %I = $3',
-                    p_schema_name,
-                    p_table_name,
-                    v_primary_key
-                )
-                USING v_calculated_hash, v_hash_version, (v_data->>v_primary_key)::bigint;
-
-                GET DIAGNOSTICS v_row_count = ROW_COUNT;
-                RAISE NOTICE 'Rows updated: %', v_row_count;
-            END IF;
-        END IF;
-
-        -- Reset batch counter for tracking purposes (no transaction control)
-        IF v_batch_count >= p_batch_size THEN
-            v_batch_count := 0;
-            RAISE NOTICE 'Processed batch of % records', p_batch_size;
-        END IF;
-    END LOOP;
-
-    -- Close the cursor
-    CLOSE v_cursor;
-
-    -- Reset myapp.allow_direct_modification to 'false'
-    PERFORM set_config('myapp.allow_direct_modification', 'false', true);
-
-    -- Return the results
-    RETURN jsonb_build_object(
-        'success', true,
-        'total_records', v_total_records,
-        'mismatch_count', v_mismatch_count,
-        'mismatches', v_mismatches,
-        'timestamp', now()
-    );
-EXCEPTION WHEN OTHERS THEN
-    -- Reset myapp.allow_direct_modification to 'false' even if an error occurs
-    PERFORM set_config('myapp.allow_direct_modification', 'false', true);
-
-    -- Close the cursor if it's still open
-    -- Note: PostgreSQL may have already closed the cursor on error, so we need to handle this carefully
-    BEGIN
-        CLOSE v_cursor;
-    EXCEPTION WHEN OTHERS THEN
-        -- Ignore errors when closing the cursor, as it may already be closed
-        NULL;
-    END;
-
-    RETURN jsonb_build_object(
-        'success', false,
-        'error', SQLERRM,
-        'error_code', SQLSTATE,
-        'timestamp', now()
-    );
-END;
-$BODY$;
-
-
--- FUNCTION: public.c77_get_operation_template(text, text, text)
-CREATE OR REPLACE FUNCTION public.c77_get_operation_template(
-	p_schema_name text,
-	p_table_name text,
-	p_operation text)
-    RETURNS text
-    LANGUAGE 'plpgsql'
-    COST 100
-    VOLATILE PARALLEL UNSAFE
-AS $BODY$
-DECLARE
-    v_operation text := lower(p_operation);
-    v_exclude_hash_columns text[] := ARRAY['id', 'content_hash', 'created_at', 'updated_at', 'deleted_at', 'hash_version'];
-    v_columns text[];
-    v_primary_key_columns text[];
-    v_unique_columns text[];
-    v_unique_constraint_name text;
-    v_data_template jsonb;
-    v_template jsonb;
-    v_json_text text;
-BEGIN
-    -- Validate inputs
-    IF p_schema_name IS NULL OR p_table_name IS NULL OR p_operation IS NULL THEN
-        RETURN format(
-            '-- Error: Missing required parameters: schema_name, table_name, or operation (Timestamp: %s)',
-            now()
-        );
-    END IF;
-
-    -- Validate schema and table existence
-    IF NOT EXISTS (
-        SELECT 1
-        FROM information_schema.tables
-        WHERE table_schema = p_schema_name
-        AND table_name = p_table_name
-    ) THEN
-        RETURN format(
-            '-- Error: Table %I.%I does not exist (Timestamp: %s)',
-            p_schema_name, p_table_name, now()
-        );
-    END IF;
-
-    -- Validate operation
-    IF v_operation NOT IN ('insert', 'update', 'upsert', 'delete', 'hard_delete') THEN
-        RETURN format(
-            '-- Error: Invalid operation. Must be one of: insert, update, upsert, delete, hard_delete (Timestamp: %s)',
-            now()
-        );
-    END IF;
-
-    -- Get primary key columns (needed for update, delete, hard_delete, and potentially upsert)
-    SELECT ARRAY_agg(a.attname::text)
-    INTO v_primary_key_columns
-    FROM pg_constraint c
-    JOIN pg_attribute a ON a.attrelid = c.conrelid AND a.attnum = ANY(c.conkey)
-    WHERE c.conrelid = format('%I.%I', p_schema_name, p_table_name)::regclass
-    AND c.contype = 'p'
-    GROUP BY c.conname
-    LIMIT 1;
-
-    -- For delete and hard_delete, we only need the primary key in the data object
-    IF v_operation IN ('delete', 'hard_delete') THEN
-        IF v_primary_key_columns IS NULL THEN
-            RETURN format(
-                '-- Error: Table %I.%I has no primary key, which is required for %s operation (Timestamp: %s)',
-                p_schema_name, p_table_name, v_operation, now()
-            );
-        END IF;
-
-        -- Build the data template with only the primary key
-        v_data_template := jsonb_build_object(v_primary_key_columns[1], 0);
-
-        -- Build the template
-        v_template := jsonb_build_object(
-            'schema_name', p_schema_name,
-            'table_name', p_table_name,
-            'operation', v_operation,
-            'data', v_data_template,
-            'primary_key', v_primary_key_columns[1],
-            'comment', format('The primary_key field specifies the column to use for identifying the record. For this table, the primary key is: %s', array_to_string(v_primary_key_columns, ', '))
-        );
-
-    ELSE
-        -- For insert, update, and upsert, include all columns used in content_hash
-        -- Get columns that are included in content_hash (exclude special columns)
-        SELECT ARRAY_agg(column_name)
-        INTO v_columns
-        FROM information_schema.columns
-        WHERE table_schema = p_schema_name
-        AND table_name = p_table_name
-        AND column_name != ALL(v_exclude_hash_columns);
-
-        IF v_columns IS NULL OR cardinality(v_columns) = 0 THEN
-            RETURN format(
-                '-- Error: No columns available for content_hash calculation after excluding special columns (Timestamp: %s)',
-                now()
-            );
-        END IF;
-
-        -- Build the data template with empty placeholder values
-        v_data_template := jsonb_object_agg(
-            column_name,
-            CASE 
-                WHEN data_type IN ('character varying', 'text') THEN '""'
-                WHEN data_type IN ('integer', 'bigint', 'smallint') THEN '0'
-                WHEN data_type = 'boolean' THEN 'false'
-                WHEN data_type IN ('timestamp with time zone', 'timestamp without time zone') THEN '"2025-01-01T00:00:00Z"'
-                WHEN data_type = 'jsonb' THEN '{}'
-                ELSE 'null'
-            END
-        )
-        FROM information_schema.columns
-        WHERE table_schema = p_schema_name
-        AND table_name = p_table_name
-        AND column_name != ALL(v_exclude_hash_columns);
-
-        -- Get unique constraint columns (for upsert)
-        SELECT c.conname, ARRAY_agg(a.attname::text)
-        INTO v_unique_constraint_name, v_unique_columns
-        FROM pg_constraint c
-        JOIN pg_attribute a ON a.attrelid = c.conrelid AND a.attnum = ANY(c.conkey)
-        WHERE c.conrelid = format('%I.%I', p_schema_name, p_table_name)::regclass
-        AND c.contype = 'u'
-        GROUP BY c.conname
-        LIMIT 1;
-
-        -- Build the base template
-        v_template := jsonb_build_object(
-            'schema_name', p_schema_name,
-            'table_name', p_table_name,
-            'operation', v_operation,
-            'data', v_data_template
-        );
-
-        -- Add primary_key field for update operation
-        IF v_operation = 'update' THEN
-            IF v_primary_key_columns IS NULL THEN
-                RETURN format(
-                    '-- Error: Table %I.%I has no primary key, which is required for %s operation (Timestamp: %s)',
-                    p_schema_name, p_table_name, v_operation, now()
-                );
-            END IF;
-
-            v_template := v_template || jsonb_build_object(
-                'primary_key', v_primary_key_columns[1], -- Use the first primary key column (assumes single-column PK for simplicity)
-                'comment', format('The primary_key field specifies the column to use for identifying the record. For this table, the primary key is: %s', array_to_string(v_primary_key_columns, ', '))
-            );
-
-            -- Add the primary key to the data template with a placeholder value
-            v_template := jsonb_set(
-                v_template,
-                '{data}',
-                (v_template->'data') || jsonb_build_object(v_primary_key_columns[1], 0)
-            );
-        END IF;
-
-        -- Add comment for upsert operation about conflict columns
-        IF v_operation = 'upsert' THEN
-            IF v_unique_columns IS NOT NULL THEN
-                v_template := v_template || jsonb_build_object(
-                    'comment', format('For upsert, the conflict columns are determined by the unique constraint %I: %s. Ensure these columns are included in the data object.', v_unique_constraint_name, array_to_string(v_unique_columns, ', '))
-                );
-            ELSIF v_primary_key_columns IS NOT NULL THEN
-                v_template := v_template || jsonb_build_object(
-                    'comment', format('For upsert, no unique constraint was found. Falling back to primary key: %s. Ensure this column is included in the data object.', array_to_string(v_primary_key_columns, ', '))
-                );
-                -- Add the primary key to the data template with a placeholder value
-                v_template := jsonb_set(
-                    v_template,
-                    '{data}',
-                    (v_template->'data') || jsonb_build_object(v_primary_key_columns[1], 0)
-                );
-            ELSE
-                RETURN format(
-                    '-- Error: Table %I.%I has no primary key or unique constraint, which is required for upsert operation (Timestamp: %s)',
-                    p_schema_name, p_table_name, now()
-                );
-            END IF;
-        END IF;
-    END IF;
-
-    -- Convert the JSONB template to a pretty-printed text string
-    v_json_text := jsonb_pretty(v_template);
-
-    -- Return the formatted SQL statement
-    RETURN format(
-        'SELECT c77_secure_db_operation(' || chr(10) ||
-        '''%s''::jsonb' || chr(10) ||
-        ')',
-        v_json_text
-    );
-
-EXCEPTION WHEN OTHERS THEN
-    RETURN format(
-        '-- Error: %s (Error Code: %s, Timestamp: %s)',
-        SQLERRM, SQLSTATE, now()
-    );
-END;
-$BODY$;
-
-
--- FUNCTION: public.c77_manage_secure_schemas(text, text)
-CREATE OR REPLACE FUNCTION public.c77_manage_secure_schemas(
-	p_operation text,
-	p_schema_name text DEFAULT NULL::text)
-    RETURNS jsonb
-    LANGUAGE 'plpgsql'
-    COST 100
-    VOLATILE PARALLEL UNSAFE
-AS $BODY$
-DECLARE
-    v_operation text := lower(p_operation);
-    v_schema_exists boolean;
-    v_row_count int;
-BEGIN
-    -- Create the secure_schemas table if it doesn't exist
-    IF NOT EXISTS (
-        SELECT 1
-        FROM information_schema.tables
-        WHERE table_schema = 'public'
-        AND table_name = 'secure_schemas'
-    ) THEN
-        CREATE TABLE public.secure_schemas (
-            schema_name text PRIMARY KEY,
-            created_at timestamptz DEFAULT now(),
-            updated_at timestamptz DEFAULT now()
-        );
-
-        -- Add a comment to document the table's purpose
-        COMMENT ON TABLE public.secure_schemas IS 'Stores schemas where c77_apply_prevent_triggers should be automatically applied via the c77_auto_apply_prevent_triggers event trigger.';
-        -- Insert the 'testme' schema as an initial entry
-        INSERT INTO public.secure_schemas (schema_name)
-        VALUES ('testme')
-        ON CONFLICT (schema_name) DO NOTHING;
-    END IF;
-
-    -- Validate operation
-    IF v_operation NOT IN ('list', 'add', 'delete') THEN
-        RETURN jsonb_build_object(
-            'success', false,
-            'error', 'Invalid operation. Must be one of: list, add, delete',
-            'timestamp', now()
-        );
-    END IF;
-
-    -- Handle the operation
-    CASE v_operation
-        WHEN 'list' THEN
-            RETURN jsonb_build_object(
-                'success', true,
-                'schemas', (
-                    SELECT jsonb_agg(
-                        jsonb_build_object(
-                            'schema_name', schema_name,
-                            'created_at', created_at,
-                            'updated_at', updated_at
-                        )
-                    )
-                    FROM public.secure_schemas
-                ),
-                'timestamp', now()
-            );
-
-        WHEN 'add' THEN
-            -- Validate schema_name
-            IF p_schema_name IS NULL THEN
-                RETURN jsonb_build_object(
-                    'success', false,
-                    'error', 'Schema name is required for add operation',
-                    'timestamp', now()
-                );
-            END IF;
-
-            -- Check if the schema exists
-            SELECT EXISTS (
-                SELECT 1
-                FROM information_schema.schemata
-                WHERE schema_name = p_schema_name
-            ) INTO v_schema_exists;
-
-            IF NOT v_schema_exists THEN
-                RETURN jsonb_build_object(
-                    'success', false,
-                    'error', format('Schema %I does not exist', p_schema_name),
-                    'timestamp', now()
-                );
-            END IF;
-
-            -- Insert the schema
-            INSERT INTO public.secure_schemas (schema_name)
-            VALUES (p_schema_name)
-            ON CONFLICT (schema_name) DO UPDATE
-            SET updated_at = now();
-
-            GET DIAGNOSTICS v_row_count = ROW_COUNT;
-
-            IF v_row_count > 0 THEN
-                RETURN jsonb_build_object(
-                    'success', true,
-                    'message', format('Schema %I added or updated in secure_schemas', p_schema_name),
-                    'timestamp', now()
-                );
-            ELSE
-                RETURN jsonb_build_object(
-                    'success', false,
-                    'error', format('Failed to add schema %I to secure_schemas', p_schema_name),
-                    'timestamp', now()
-                );
-            END IF;
-
-        WHEN 'delete' THEN
-            -- Validate schema_name
-            IF p_schema_name IS NULL THEN
-                RETURN jsonb_build_object(
-                    'success', false,
-                    'error', 'Schema name is required for delete operation',
-                    'timestamp', now()
-                );
-            END IF;
-
-            -- Delete the schema
-            DELETE FROM public.secure_schemas
-            WHERE schema_name = p_schema_name;
-
-            IF FOUND THEN
-                RETURN jsonb_build_object(
-                    'success', true,
-                    'message', format('Schema %I removed from secure_schemas', p_schema_name),
-                    'timestamp', now()
-                );
-            ELSE
-                RETURN jsonb_build_object(
-                    'success', false,
-                    'error', format('Schema %I not found in secure_schemas', p_schema_name),
-                    'timestamp', now()
-                );
-            END IF;
-
-        ELSE
-            -- This should never be reached due to earlier validation, but included for completeness
-            RETURN jsonb_build_object(
-                'success', false,
-                'error', 'Invalid operation',
-                'timestamp', now()
-            );
-    END CASE;
-
-EXCEPTION WHEN OTHERS THEN
-    RETURN jsonb_build_object(
-        'success', false,
-        'error', SQLERRM,
-        'error_code', SQLSTATE,
-        'timestamp', now()
-    );
-END;
-$BODY$;
-
-DO $$
-BEGIN
-    -- Check if the event trigger already exists
-    IF NOT EXISTS (
-        SELECT 1 FROM pg_event_trigger WHERE evtname = 'c77_event_auto_apply_prevent_triggers'
-    ) THEN
-        -- Create the event trigger
-        CREATE EVENT TRIGGER c77_event_auto_apply_prevent_triggers ON DDL_COMMAND_END
-        WHEN TAG IN ('CREATE TABLE', 'ALTER TABLE')
-        EXECUTE PROCEDURE c77_auto_apply_prevent_triggers();
-    END IF;
-END $$;
-
diff --git a/c77_secure_db--1.0.sql b/c77_secure_db--1.0.sql
new file mode 100644
index 0000000..61035a2
--- /dev/null
+++ b/c77_secure_db--1.0.sql
@@ -0,0 +1,1859 @@
+-- c77_secure_db--1.0.sql: Complete rebuild with security-first design
+-- Requires PostgreSQL 14 or later and pgcrypto extension
+
+\echo 'Loading c77_secure_db extension v1.0...'
+
+-- Validate dependencies
+DO $$
+    BEGIN
+        IF NOT EXISTS (SELECT 1 FROM pg_extension WHERE extname = 'pgcrypto') THEN
+            RAISE EXCEPTION 'The c77_secure_db extension requires the pgcrypto extension to be installed first.';
+        END IF;
+    END $$;
+
+-- =============================================================================
+-- SECURITY INFRASTRUCTURE
+-- =============================================================================
+
+-- Authorization tokens table - secure, short-lived tokens
+CREATE TABLE c77_secure_db_auth_tokens (
+                                           token UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+                                           session_id TEXT NOT NULL DEFAULT pg_backend_pid()::text,
+                                           created_at TIMESTAMPTZ DEFAULT now(),
+                                           expires_at TIMESTAMPTZ DEFAULT (now() + interval '5 seconds'),
+                                           operation_type TEXT,
+                                           used BOOLEAN DEFAULT false
+);
+
+-- Performance index for token lookups
+CREATE INDEX idx_c77_secure_db_auth_tokens_session_expires
+    ON c77_secure_db_auth_tokens(session_id, expires_at) WHERE NOT used;
+
+-- Secure schemas registry
+CREATE TABLE c77_secure_db_secure_schemas (
+                                              schema_name TEXT PRIMARY KEY,
+                                              created_at TIMESTAMPTZ DEFAULT now(),
+                                              updated_at TIMESTAMPTZ DEFAULT now(),
+                                              settings JSONB DEFAULT '{}'::jsonb
+);
+
+-- Operation audit log for compliance and monitoring
+CREATE TABLE c77_secure_db_operation_audit (
+                                               id BIGSERIAL PRIMARY KEY,
+                                               operation_id UUID DEFAULT gen_random_uuid(),
+                                               schema_name TEXT NOT NULL,
+                                               table_name TEXT NOT NULL,
+                                               operation_type TEXT NOT NULL,
+                                               user_name TEXT DEFAULT current_user,
+                                               session_id TEXT DEFAULT pg_backend_pid()::text,
+                                               client_addr INET DEFAULT inet_client_addr(),
+                                               application_name TEXT DEFAULT current_setting('application_name', true),
+                                               data_hash TEXT,
+                                               rbac_user_id TEXT,
+                                               rbac_feature TEXT,
+                                               success BOOLEAN NOT NULL,
+                                               error_message TEXT,
+                                               execution_time_ms INTEGER,
+                                               created_at TIMESTAMPTZ DEFAULT now()
+);
+
+-- Audit table indexes
+CREATE INDEX idx_c77_secure_db_audit_created_at ON c77_secure_db_operation_audit(created_at);
+CREATE INDEX idx_c77_secure_db_audit_schema_table ON c77_secure_db_operation_audit(schema_name, table_name);
+CREATE INDEX idx_c77_secure_db_audit_user ON c77_secure_db_operation_audit(user_name);
+CREATE INDEX idx_c77_secure_db_audit_rbac_user ON c77_secure_db_operation_audit(rbac_user_id) WHERE rbac_user_id IS NOT NULL;
+
+COMMENT ON TABLE c77_secure_db_auth_tokens IS 'Short-lived authorization tokens for secure operations';
+COMMENT ON TABLE c77_secure_db_secure_schemas IS 'Registry of schemas under c77_secure_db protection';
+COMMENT ON TABLE c77_secure_db_operation_audit IS 'Audit log of all secure database operations';
+
+-- =============================================================================
+-- SECURITY FUNCTIONS
+-- =============================================================================
+
+-- Create authorization token (SECURITY DEFINER - only authorized functions can call)
+CREATE OR REPLACE FUNCTION c77_secure_db_create_auth_token(
+    p_operation_type TEXT DEFAULT 'generic'
+) RETURNS UUID
+    SECURITY DEFINER
+    LANGUAGE plpgsql AS $$
+DECLARE
+    v_token UUID;
+BEGIN
+    -- Clean expired tokens first (maintenance)
+    DELETE FROM c77_secure_db_auth_tokens
+    WHERE expires_at < now() OR used = true;
+
+    -- Generate new token
+    INSERT INTO c77_secure_db_auth_tokens (session_id, operation_type)
+    VALUES (pg_backend_pid()::text, p_operation_type)
+    RETURNING token INTO v_token;
+
+    RETURN v_token;
+END;
+$$;
+
+-- Validate authorization token (SECURITY DEFINER - only triggers can call)
+CREATE OR REPLACE FUNCTION c77_secure_db_validate_auth_token(
+    p_token UUID
+) RETURNS BOOLEAN
+    SECURITY DEFINER
+    LANGUAGE plpgsql AS $$
+DECLARE
+    v_valid BOOLEAN := false;
+BEGIN
+    -- Mark token as used and check validity atomically
+    UPDATE c77_secure_db_auth_tokens
+    SET used = true
+    WHERE token = p_token
+      AND session_id = pg_backend_pid()::text
+      AND expires_at > now()
+      AND used = false;
+
+    GET DIAGNOSTICS v_valid = FOUND;
+
+    -- Clean up used token immediately
+    DELETE FROM c77_secure_db_auth_tokens WHERE token = p_token;
+
+    RETURN v_valid;
+END;
+$$;
+
+-- Secure trigger function - prevents all unauthorized modifications
+CREATE OR REPLACE FUNCTION c77_secure_db_prevent_direct_modification()
+    RETURNS TRIGGER LANGUAGE plpgsql AS $$
+DECLARE
+    v_token UUID;
+    v_valid BOOLEAN := false;
+BEGIN
+    -- Try to get and validate authorization token
+    BEGIN
+        v_token := current_setting('c77_secure_db.auth_token')::UUID;
+        v_valid := c77_secure_db_validate_auth_token(v_token);
+    EXCEPTION WHEN OTHERS THEN
+        v_valid := false;
+    END;
+
+    -- Only allow operation if token is valid
+    IF v_valid THEN
+        CASE TG_OP
+            WHEN 'DELETE' THEN RETURN OLD;
+            WHEN 'INSERT' THEN RETURN NEW;
+            WHEN 'UPDATE' THEN RETURN NEW;
+            END CASE;
+    END IF;
+
+    -- Block unauthorized access with helpful error
+    RAISE EXCEPTION 'Direct modifications not allowed on secure table %.%. Use c77_secure_db_operation() function.',
+        TG_TABLE_SCHEMA, TG_TABLE_NAME
+        USING HINT = 'All table modifications must go through the secure operation API',
+            ERRCODE = 'insufficient_privilege';
+END;
+$$;
+
+-- =============================================================================
+-- CONTENT HASH AND INTEGRITY FUNCTIONS
+-- =============================================================================
+
+-- Calculate content hash for tamper detection
+CREATE OR REPLACE FUNCTION c77_secure_db_calculate_content_hash(
+    p_schema_name TEXT,
+    p_table_name TEXT,
+    p_data JSONB
+) RETURNS TEXT
+    LANGUAGE plpgsql STABLE AS $$
+DECLARE
+    v_exclude_columns TEXT[] := ARRAY['id', 'content_hash', 'created_at', 'updated_at', 'deleted_at', 'hash_version'];
+    v_column_comment TEXT;
+    v_temp_exclude_columns TEXT[];
+    v_sorted_keys TEXT[];
+    v_hash_input TEXT := '';
+    v_key TEXT;
+BEGIN
+    -- Get custom exclude columns from content_hash column comment if exists
+    BEGIN
+        SELECT col_description(
+                       format('%I.%I', p_schema_name, p_table_name)::regclass::oid,
+                       (SELECT attnum FROM pg_attribute
+                        WHERE attrelid = format('%I.%I', p_schema_name, p_table_name)::regclass
+                          AND attname = 'content_hash')
+               ) INTO v_column_comment;
+
+        IF v_column_comment IS NOT NULL AND v_column_comment::jsonb ? 'exclude_hash_columns' THEN
+            v_temp_exclude_columns := ARRAY(
+                    SELECT jsonb_array_elements_text(v_column_comment::jsonb->'exclude_hash_columns')
+                                      );
+            v_exclude_columns := v_exclude_columns || v_temp_exclude_columns;
+        END IF;
+    EXCEPTION WHEN OTHERS THEN
+        -- Ignore invalid JSON in comments
+        NULL;
+    END;
+
+    -- Get sorted keys for consistent hashing
+    SELECT array_agg(key ORDER BY key) INTO v_sorted_keys
+    FROM jsonb_object_keys(p_data) AS key
+    WHERE key != ALL(v_exclude_columns);
+
+    -- Build hash input string efficiently
+    FOREACH v_key IN ARRAY v_sorted_keys LOOP
+            v_hash_input := v_hash_input || v_key || ':' || COALESCE(p_data->>v_key, '') || '|';
+        END LOOP;
+
+    -- Return SHA-256 hash
+    RETURN encode(sha256(convert_to(v_hash_input, 'UTF8')), 'hex');
+END;
+$$;
+
+-- Check if record data is fresh (not tampered with)
+CREATE OR REPLACE FUNCTION c77_secure_db_check_freshness(
+    p_schema_name TEXT,
+    p_table_name TEXT,
+    p_data JSONB
+) RETURNS JSONB
+    LANGUAGE plpgsql STABLE AS $$
+DECLARE
+    v_stored_hash TEXT;
+    v_calculated_hash TEXT;
+    v_id TEXT;
+    v_hash_version INTEGER;
+    v_query TEXT;
+    v_data_cleaned JSONB;
+    v_special_columns TEXT[] := ARRAY['content_hash', 'created_at', 'updated_at', 'deleted_at', 'hash_version'];
+    v_column TEXT;
+BEGIN
+    -- Validate inputs
+    IF p_schema_name IS NULL OR p_table_name IS NULL OR p_data IS NULL THEN
+        RETURN jsonb_build_object(
+                'success', false,
+                'error', 'Missing required parameters',
+                'timestamp', now()
+               );
+    END IF;
+
+    -- Extract primary key
+    v_id := p_data->>'id';
+    IF v_id IS NULL THEN
+        RETURN jsonb_build_object(
+                'success', false,
+                'error', 'Primary key "id" missing in input data',
+                'timestamp', now()
+               );
+    END IF;
+
+    -- Clean input data by removing special columns
+    v_data_cleaned := p_data;
+    FOREACH v_column IN ARRAY v_special_columns LOOP
+            v_data_cleaned := v_data_cleaned - v_column;
+        END LOOP;
+
+    -- Calculate hash of input data
+    v_calculated_hash := c77_secure_db_calculate_content_hash(p_schema_name, p_table_name, v_data_cleaned);
+
+    -- Build query to get stored hash
+    v_query := format(
+            'SELECT content_hash, COALESCE(hash_version, 1) FROM %I.%I WHERE id = $1',
+            p_schema_name, p_table_name
+               );
+
+    -- Add deleted_at filter if column exists
+    IF EXISTS (
+        SELECT 1 FROM information_schema.columns
+        WHERE table_schema = p_schema_name AND table_name = p_table_name AND column_name = 'deleted_at'
+    ) THEN
+        v_query := v_query || ' AND deleted_at IS NULL';
+    END IF;
+
+    -- Execute query
+    EXECUTE v_query INTO v_stored_hash, v_hash_version USING v_id::BIGINT;
+
+    -- Check if record exists
+    IF v_stored_hash IS NULL THEN
+        RETURN jsonb_build_object(
+                'success', false,
+                'error', 'Record with id ' || v_id || ' not found or has been deleted',
+                'timestamp', now()
+               );
+    END IF;
+
+    -- Return comparison result
+    RETURN jsonb_build_object(
+            'success', true,
+            'id', v_id,
+            'fresh', (v_stored_hash = v_calculated_hash),
+            'stored_hash', v_stored_hash,
+            'calculated_hash', v_calculated_hash,
+            'hash_version', v_hash_version,
+            'timestamp', now()
+           );
+
+EXCEPTION WHEN OTHERS THEN
+    RETURN jsonb_build_object(
+            'success', false,
+            'error', SQLERRM,
+            'error_code', SQLSTATE,
+            'timestamp', now()
+           );
+END;
+$$;
+
+-- =============================================================================
+-- SCHEMA MANAGEMENT
+-- =============================================================================
+
+-- Manage secure schemas registry
+CREATE OR REPLACE FUNCTION c77_secure_db_manage_secure_schemas(
+    p_operation TEXT,
+    p_schema_name TEXT DEFAULT NULL
+) RETURNS JSONB
+    LANGUAGE plpgsql AS $$
+DECLARE
+    v_operation TEXT := lower(p_operation);
+    v_schema_exists BOOLEAN;
+    v_row_count INTEGER;
+BEGIN
+    -- Validate operation
+    IF v_operation NOT IN ('list', 'add', 'remove') THEN
+        RETURN jsonb_build_object(
+                'success', false,
+                'error', 'Invalid operation. Must be one of: list, add, remove',
+                'timestamp', now()
+               );
+    END IF;
+
+    CASE v_operation
+        WHEN 'list' THEN
+            RETURN jsonb_build_object(
+                    'success', true,
+                    'schemas', (
+                        SELECT COALESCE(jsonb_agg(
+                                                jsonb_build_object(
+                                                        'schema_name', schema_name,
+                                                        'created_at', created_at,
+                                                        'updated_at', updated_at,
+                                                        'settings', settings
+                                                )
+                                        ), '[]'::jsonb)
+                        FROM c77_secure_db_secure_schemas
+                    ),
+                    'timestamp', now()
+                   );
+
+        WHEN 'add' THEN
+            -- Validate schema name
+            IF p_schema_name IS NULL THEN
+                RETURN jsonb_build_object(
+                        'success', false,
+                        'error', 'Schema name is required for add operation',
+                        'timestamp', now()
+                       );
+            END IF;
+
+            -- Check if schema exists in database
+            SELECT EXISTS (
+                SELECT 1 FROM information_schema.schemata
+                WHERE schema_name = p_schema_name
+            ) INTO v_schema_exists;
+
+            IF NOT v_schema_exists THEN
+                RETURN jsonb_build_object(
+                        'success', false,
+                        'error', format('Schema %I does not exist in database', p_schema_name),
+                        'timestamp', now()
+                       );
+            END IF;
+
+            -- Add to secure schemas
+            INSERT INTO c77_secure_db_secure_schemas (schema_name)
+            VALUES (p_schema_name)
+            ON CONFLICT (schema_name) DO UPDATE SET updated_at = now();
+
+            -- Apply triggers to existing tables
+            PERFORM c77_secure_db_apply_triggers(p_schema_name);
+
+            RETURN jsonb_build_object(
+                    'success', true,
+                    'message', format('Schema %I added to secure registry and triggers applied', p_schema_name),
+                    'timestamp', now()
+                   );
+
+        WHEN 'remove' THEN
+            IF p_schema_name IS NULL THEN
+                RETURN jsonb_build_object(
+                        'success', false,
+                        'error', 'Schema name is required for remove operation',
+                        'timestamp', now()
+                       );
+            END IF;
+
+            DELETE FROM c77_secure_db_secure_schemas WHERE schema_name = p_schema_name;
+            GET DIAGNOSTICS v_row_count = ROW_COUNT;
+
+            IF v_row_count > 0 THEN
+                RETURN jsonb_build_object(
+                        'success', true,
+                        'message', format('Schema %I removed from secure registry', p_schema_name),
+                        'timestamp', now()
+                       );
+            ELSE
+                RETURN jsonb_build_object(
+                        'success', false,
+                        'error', format('Schema %I not found in secure registry', p_schema_name),
+                        'timestamp', now()
+                       );
+            END IF;
+        END CASE;
+
+EXCEPTION WHEN OTHERS THEN
+    RETURN jsonb_build_object(
+            'success', false,
+            'error', SQLERRM,
+            'error_code', SQLSTATE,
+            'timestamp', now()
+           );
+END;
+$$;
+
+-- Apply security triggers to all tables in a schema
+CREATE OR REPLACE FUNCTION c77_secure_db_apply_triggers(p_schema_name TEXT)
+    RETURNS VOID
+    LANGUAGE plpgsql AS $$
+DECLARE
+    v_table_name TEXT;
+    v_trigger_count INTEGER := 0;
+BEGIN
+    FOR v_table_name IN
+        SELECT table_name
+        FROM information_schema.tables
+        WHERE table_schema = p_schema_name
+          AND table_type = 'BASE TABLE'
+        LOOP
+            -- Drop existing triggers first
+            EXECUTE format('DROP TRIGGER IF EXISTS c77_secure_db_prevent_insert ON %I.%I', p_schema_name, v_table_name);
+            EXECUTE format('DROP TRIGGER IF EXISTS c77_secure_db_prevent_update ON %I.%I', p_schema_name, v_table_name);
+            EXECUTE format('DROP TRIGGER IF EXISTS c77_secure_db_prevent_delete ON %I.%I', p_schema_name, v_table_name);
+
+            -- Create new triggers
+            EXECUTE format(
+                    'CREATE TRIGGER c77_secure_db_prevent_insert BEFORE INSERT ON %I.%I ' ||
+                    'FOR EACH ROW EXECUTE FUNCTION c77_secure_db_prevent_direct_modification()',
+                    p_schema_name, v_table_name
+                    );
+            EXECUTE format(
+                    'CREATE TRIGGER c77_secure_db_prevent_update BEFORE UPDATE ON %I.%I ' ||
+                    'FOR EACH ROW EXECUTE FUNCTION c77_secure_db_prevent_direct_modification()',
+                    p_schema_name, v_table_name
+                    );
+            EXECUTE format(
+                    'CREATE TRIGGER c77_secure_db_prevent_delete BEFORE DELETE ON %I.%I ' ||
+                    'FOR EACH ROW EXECUTE FUNCTION c77_secure_db_prevent_direct_modification()',
+                    p_schema_name, v_table_name
+                    );
+
+            v_trigger_count := v_trigger_count + 1;
+        END LOOP;
+
+    RAISE NOTICE 'Applied c77_secure_db triggers to % tables in schema %', v_trigger_count, p_schema_name;
+END;
+$$;
+
+-- Auto-apply triggers when tables are created (event trigger)
+CREATE OR REPLACE FUNCTION c77_secure_db_auto_apply_triggers()
+    RETURNS EVENT_TRIGGER
+    LANGUAGE plpgsql AS $$
+DECLARE
+    v_obj RECORD;
+    v_schema_name TEXT;
+BEGIN
+    FOR v_obj IN SELECT * FROM pg_event_trigger_ddl_commands() WHERE object_type = 'table' LOOP
+            v_schema_name := v_obj.schema_name;
+
+            -- Check if schema is in secure registry
+            IF EXISTS (SELECT 1 FROM c77_secure_db_secure_schemas WHERE schema_name = v_schema_name) THEN
+                PERFORM c77_secure_db_apply_triggers(v_schema_name);
+                RAISE NOTICE 'Auto-applied c77_secure_db triggers to new table %.%', v_schema_name, v_obj.object_identity;
+            END IF;
+        END LOOP;
+END;
+$$;
+
+-- Create the event trigger
+DO $$
+    BEGIN
+        IF NOT EXISTS (SELECT 1 FROM pg_event_trigger WHERE evtname = 'c77_secure_db_event_auto_apply_triggers') THEN
+            CREATE EVENT TRIGGER c77_secure_db_event_auto_apply_triggers
+                ON DDL_COMMAND_END
+                WHEN TAG IN ('CREATE TABLE', 'ALTER TABLE')
+            EXECUTE FUNCTION c77_secure_db_auto_apply_triggers();
+        END IF;
+    END $$;
+
+-- =============================================================================
+-- ACCESS CONTROL AND ROLES
+-- =============================================================================
+
+-- Create security roles
+DO $$
+    BEGIN
+        IF NOT EXISTS (SELECT 1 FROM pg_roles WHERE rolname = 'c77_secure_db_admin') THEN
+            CREATE ROLE c77_secure_db_admin;
+        END IF;
+
+        IF NOT EXISTS (SELECT 1 FROM pg_roles WHERE rolname = 'c77_secure_db_user') THEN
+            CREATE ROLE c77_secure_db_user;
+        END IF;
+
+        IF NOT EXISTS (SELECT 1 FROM pg_roles WHERE rolname = 'c77_secure_db_readonly') THEN
+            CREATE ROLE c77_secure_db_readonly;
+        END IF;
+    END $$;
+
+-- Set up proper permissions
+-- Revoke dangerous permissions from PUBLIC
+REVOKE ALL ON FUNCTION c77_secure_db_create_auth_token(TEXT) FROM PUBLIC;
+REVOKE ALL ON FUNCTION c77_secure_db_validate_auth_token(UUID) FROM PUBLIC;
+REVOKE ALL ON TABLE c77_secure_db_auth_tokens FROM PUBLIC;
+REVOKE ALL ON TABLE c77_secure_db_secure_schemas FROM PUBLIC;
+REVOKE ALL ON TABLE c77_secure_db_operation_audit FROM PUBLIC;
+
+-- Grant appropriate permissions
+-- Readonly role
+GRANT EXECUTE ON FUNCTION c77_secure_db_check_freshness(TEXT, TEXT, JSONB) TO c77_secure_db_readonly;
+GRANT EXECUTE ON FUNCTION c77_secure_db_calculate_content_hash(TEXT, TEXT, JSONB) TO c77_secure_db_readonly;
+GRANT SELECT ON c77_secure_db_operation_audit TO c77_secure_db_readonly;
+
+-- User role
+GRANT c77_secure_db_readonly TO c77_secure_db_user;
+GRANT EXECUTE ON FUNCTION c77_secure_db_create_auth_token(TEXT) TO c77_secure_db_user;
+
+-- Admin role
+GRANT c77_secure_db_user TO c77_secure_db_admin;
+GRANT EXECUTE ON FUNCTION c77_secure_db_manage_secure_schemas(TEXT, TEXT) TO c77_secure_db_admin;
+GRANT EXECUTE ON FUNCTION c77_secure_db_apply_triggers(TEXT) TO c77_secure_db_admin;
+GRANT ALL ON c77_secure_db_secure_schemas TO c77_secure_db_admin;
+GRANT SELECT, INSERT ON c77_secure_db_operation_audit TO c77_secure_db_admin;
+
+-- Comments for documentation
+COMMENT ON FUNCTION c77_secure_db_create_auth_token(TEXT) IS 'Creates short-lived authorization token for secure operations';
+COMMENT ON FUNCTION c77_secure_db_validate_auth_token(UUID) IS 'Validates and consumes authorization token';
+COMMENT ON FUNCTION c77_secure_db_prevent_direct_modification() IS 'Trigger function preventing unauthorized table modifications';
+COMMENT ON FUNCTION c77_secure_db_calculate_content_hash(TEXT, TEXT, JSONB) IS 'Calculates SHA-256 hash for tamper detection';
+COMMENT ON FUNCTION c77_secure_db_check_freshness(TEXT, TEXT, JSONB) IS 'Verifies record integrity by comparing content hashes';
+COMMENT ON FUNCTION c77_secure_db_manage_secure_schemas(TEXT, TEXT) IS 'Manages registry of schemas under secure protection';
+COMMENT ON FUNCTION c77_secure_db_apply_triggers(TEXT) IS 'Applies security triggers to all tables in a schema';
+
+
+-- Add this to the main extension SQL file
+
+-- =============================================================================
+-- MAIN SECURE OPERATION FUNCTION
+-- =============================================================================
+
+-- Main secure operation function with optional RBAC integration
+CREATE OR REPLACE FUNCTION c77_secure_db_operation(
+    p_json_data JSONB,
+    p_check_rbac BOOLEAN DEFAULT false,
+    p_required_feature TEXT DEFAULT NULL,
+    p_scope_type TEXT DEFAULT NULL,
+    p_scope_id TEXT DEFAULT NULL
+) RETURNS JSONB
+    LANGUAGE plpgsql SECURITY DEFINER AS $$
+DECLARE
+    v_start_time TIMESTAMPTZ := clock_timestamp();
+    v_auth_token UUID;
+    v_rbac_available BOOLEAN := false;
+    v_external_id TEXT;
+    v_operation_id UUID := gen_random_uuid();
+
+    -- Operation parameters
+    v_schema_name TEXT;
+    v_table_name TEXT;
+    v_operation TEXT;
+    v_primary_key TEXT := 'id';
+    v_data JSONB;
+
+    -- Processing variables
+    v_data_cleaned JSONB;
+    v_content_hash TEXT;
+    v_hash_version INTEGER := 1;
+    v_columns TEXT[];
+    v_values TEXT[];
+    v_update_pairs TEXT[];
+    v_row_count INTEGER;
+    v_result JSONB;
+
+    -- Schema introspection
+    v_has_content_hash BOOLEAN;
+    v_has_created_at BOOLEAN;
+    v_has_updated_at BOOLEAN;
+    v_has_deleted_at BOOLEAN;
+    v_has_hash_version BOOLEAN;
+    v_primary_key_type TEXT;
+
+    -- Error handling
+    v_execution_time_ms INTEGER;
+    v_error_message TEXT;
+BEGIN
+    -- STEP 1: Validate input parameters
+    IF p_json_data IS NULL THEN
+        RETURN jsonb_build_object(
+            'success', false,
+            'error', 'Input JSON data is required',
+            'timestamp', now()
+        );
+    END IF;
+
+    -- Extract parameters
+    v_schema_name := p_json_data->>'schema_name';
+    v_table_name := p_json_data->>'table_name';
+    v_operation := lower(p_json_data->>'operation');
+    v_primary_key := COALESCE(p_json_data->>'primary_key', 'id');
+    v_data := p_json_data->'data';
+
+    -- Validate required parameters
+    IF v_schema_name IS NULL OR v_table_name IS NULL OR v_operation IS NULL THEN
+        RETURN jsonb_build_object(
+            'success', false,
+            'error', 'Missing required fields: schema_name, table_name, or operation',
+            'timestamp', now()
+        );
+    END IF;
+
+    IF v_operation NOT IN ('insert', 'update', 'upsert', 'delete', 'soft_delete') THEN
+        RETURN jsonb_build_object(
+            'success', false,
+            'error', 'Invalid operation. Must be one of: insert, update, upsert, delete, soft_delete',
+            'timestamp', now()
+        );
+    END IF;
+
+    -- STEP 2: Check RBAC if requested and available
+    IF p_check_rbac AND p_required_feature IS NOT NULL THEN
+        SELECT EXISTS(SELECT 1 FROM pg_extension WHERE extname = 'c77_rbac') INTO v_rbac_available;
+
+        IF v_rbac_available THEN
+            v_external_id := current_setting('c77_rbac.external_id', true);
+
+            IF v_external_id IS NULL OR v_external_id = '' THEN
+                RETURN jsonb_build_object(
+                    'success', false,
+                    'error', 'RBAC enabled but no user context set',
+                    'hint', 'Set c77_rbac.external_id session variable',
+                    'timestamp', now()
+                );
+            END IF;
+
+            -- Perform RBAC check using c77_rbac extension
+            IF NOT c77_rbac_can_access(
+                p_required_feature,
+                v_external_id,
+                COALESCE(p_scope_type, 'global'),
+                COALESCE(p_scope_id, 'all')
+            ) THEN
+                -- Log unauthorized attempt
+                INSERT INTO c77_secure_db_operation_audit (
+                    operation_id, schema_name, table_name, operation_type,
+                    rbac_user_id, rbac_feature, success, error_message
+                ) VALUES (
+                    v_operation_id, v_schema_name, v_table_name, v_operation,
+                    v_external_id, p_required_feature, false, 'Insufficient permissions'
+                );
+
+                RETURN jsonb_build_object(
+                    'success', false,
+                    'error', 'Insufficient permissions',
+                    'required_feature', p_required_feature,
+                    'user_id', v_external_id,
+                    'timestamp', now()
+                );
+            END IF;
+        END IF;
+    END IF;
+
+    -- STEP 3: Table introspection
+    SELECT EXISTS (
+        SELECT 1 FROM information_schema.columns
+        WHERE table_schema = v_schema_name AND table_name = v_table_name AND column_name = 'content_hash'
+    ) INTO v_has_content_hash;
+
+    SELECT EXISTS (
+        SELECT 1 FROM information_schema.columns
+        WHERE table_schema = v_schema_name AND table_name = v_table_name AND column_name = 'created_at'
+    ) INTO v_has_created_at;
+
+    SELECT EXISTS (
+        SELECT 1 FROM information_schema.columns
+        WHERE table_schema = v_schema_name AND table_name = v_table_name AND column_name = 'updated_at'
+    ) INTO v_has_updated_at;
+
+    SELECT EXISTS (
+        SELECT 1 FROM information_schema.columns
+        WHERE table_schema = v_schema_name AND table_name = v_table_name AND column_name = 'deleted_at'
+    ) INTO v_has_deleted_at;
+
+    SELECT EXISTS (
+        SELECT 1 FROM information_schema.columns
+        WHERE table_schema = v_schema_name AND table_name = v_table_name AND column_name = 'hash_version'
+    ) INTO v_has_hash_version;
+
+    -- Get primary key data type
+    SELECT data_type INTO v_primary_key_type
+    FROM information_schema.columns
+    WHERE table_schema = v_schema_name AND table_name = v_table_name AND column_name = v_primary_key;
+
+    -- STEP 4: Create authorization token and set context
+    v_auth_token := c77_secure_db_create_auth_token(v_operation);
+    PERFORM set_config('c77_secure_db.auth_token', v_auth_token::text, true);
+
+    -- STEP 5: Prepare data for operation
+    -- Clean data by removing system columns
+    v_data_cleaned := v_data;
+    IF v_data_cleaned ? 'content_hash' THEN v_data_cleaned := v_data_cleaned - 'content_hash'; END IF;
+    IF v_data_cleaned ? 'created_at' THEN v_data_cleaned := v_data_cleaned - 'created_at'; END IF;
+    IF v_data_cleaned ? 'updated_at' THEN v_data_cleaned := v_data_cleaned - 'updated_at'; END IF;
+    IF v_data_cleaned ? 'deleted_at' THEN v_data_cleaned := v_data_cleaned - 'deleted_at'; END IF;
+    IF v_data_cleaned ? 'hash_version' THEN v_data_cleaned := v_data_cleaned - 'hash_version'; END IF;
+
+    -- Calculate content hash if table supports it
+    IF v_has_content_hash AND v_operation IN ('insert', 'update', 'upsert') THEN
+        v_content_hash := c77_secure_db_calculate_content_hash(v_schema_name, v_table_name, v_data_cleaned);
+    END IF;
+
+    -- Prepare columns and values for SQL generation
+    SELECT array_agg(key), array_agg(quote_literal(v_data->>key))
+    INTO v_columns, v_values
+    FROM jsonb_object_keys(v_data) AS key
+    WHERE key NOT IN ('content_hash', 'created_at', 'updated_at', 'deleted_at', 'hash_version');
+
+    -- Add system columns to insert/update
+    IF v_operation IN ('insert', 'update', 'upsert') THEN
+        IF v_has_content_hash AND v_content_hash IS NOT NULL THEN
+            v_columns := v_columns || ARRAY['content_hash'];
+            v_values := v_values || ARRAY[quote_literal(v_content_hash)];
+        END IF;
+
+        IF v_has_hash_version THEN
+            v_columns := v_columns || ARRAY['hash_version'];
+            v_values := v_values || ARRAY[quote_literal(v_hash_version)];
+        END IF;
+
+        IF v_has_created_at AND v_operation IN ('insert', 'upsert') THEN
+            v_columns := v_columns || ARRAY['created_at'];
+            v_values := v_values || ARRAY[quote_literal(now())];
+        END IF;
+
+        IF v_has_updated_at THEN
+            v_columns := v_columns || ARRAY['updated_at'];
+            v_values := v_values || ARRAY[quote_literal(now())];
+        END IF;
+    END IF;
+
+    -- STEP 6: Execute the operation
+    CASE v_operation
+        WHEN 'insert' THEN
+            EXECUTE format(
+                'INSERT INTO %I.%I (%s) VALUES (%s) RETURNING *',
+                v_schema_name, v_table_name,
+                array_to_string(v_columns, ','),
+                array_to_string(v_values, ',')
+            );
+            GET DIAGNOSTICS v_row_count = ROW_COUNT;
+
+        WHEN 'update' THEN
+            IF NOT (v_data ? v_primary_key) THEN
+                RAISE EXCEPTION 'Primary key "%" required for update operation', v_primary_key;
+            END IF;
+
+            -- Build update SET clause
+            v_update_pairs := ARRAY(
+                SELECT format('%I = %s', key, quote_literal(v_data->>key))
+                FROM jsonb_object_keys(v_data) AS key
+                WHERE key NOT IN ('content_hash', 'created_at', 'updated_at', 'deleted_at', 'hash_version', v_primary_key)
+            );
+
+            -- Add system columns to update
+            IF v_has_updated_at THEN
+                v_update_pairs := v_update_pairs || ARRAY[format('updated_at = %L', now())];
+            END IF;
+            IF v_has_content_hash AND v_content_hash IS NOT NULL THEN
+                v_update_pairs := v_update_pairs || ARRAY[format('content_hash = %L', v_content_hash)];
+            END IF;
+            IF v_has_hash_version THEN
+                v_update_pairs := v_update_pairs || ARRAY[format('hash_version = %L', v_hash_version)];
+            END IF;
+
+            EXECUTE format(
+                'UPDATE %I.%I SET %s WHERE %I = ($1)::%s RETURNING *',
+                v_schema_name, v_table_name,
+                array_to_string(v_update_pairs, ','),
+                v_primary_key, COALESCE(v_primary_key_type, 'bigint')
+            ) USING (v_data->>v_primary_key);
+            GET DIAGNOSTICS v_row_count = ROW_COUNT;
+
+        WHEN 'upsert' THEN
+            -- Simple upsert using primary key conflict
+            EXECUTE format(
+                'INSERT INTO %I.%I (%s) VALUES (%s) ON CONFLICT (%I) DO UPDATE SET %s RETURNING *',
+                v_schema_name, v_table_name,
+                array_to_string(v_columns, ','),
+                array_to_string(v_values, ','),
+                v_primary_key,
+                array_to_string(ARRAY(
+                    SELECT format('%I = EXCLUDED.%I', col, col)
+                    FROM unnest(v_columns) AS col
+                    WHERE col != v_primary_key
+                ), ',')
+            );
+            GET DIAGNOSTICS v_row_count = ROW_COUNT;
+
+        WHEN 'delete' THEN
+            IF NOT (v_data ? v_primary_key) THEN
+                RAISE EXCEPTION 'Primary key "%" required for delete operation', v_primary_key;
+            END IF;
+
+            EXECUTE format(
+                'DELETE FROM %I.%I WHERE %I = ($1)::%s',
+                v_schema_name, v_table_name,
+                v_primary_key, COALESCE(v_primary_key_type, 'bigint')
+            ) USING (v_data->>v_primary_key);
+            GET DIAGNOSTICS v_row_count = ROW_COUNT;
+
+        WHEN 'soft_delete' THEN
+            IF NOT (v_data ? v_primary_key) THEN
+                RAISE EXCEPTION 'Primary key "%" required for soft_delete operation', v_primary_key;
+            END IF;
+
+            IF NOT v_has_deleted_at THEN
+                RAISE EXCEPTION 'Table %.% does not have deleted_at column for soft delete', v_schema_name, v_table_name;
+            END IF;
+
+            v_update_pairs := ARRAY[format('deleted_at = %L', now())];
+            IF v_has_updated_at THEN
+                v_update_pairs := v_update_pairs || ARRAY[format('updated_at = %L', now())];
+            END IF;
+
+            EXECUTE format(
+                'UPDATE %I.%I SET %s WHERE %I = ($1)::%s AND deleted_at IS NULL RETURNING *',
+                v_schema_name, v_table_name,
+                array_to_string(v_update_pairs, ','),
+                v_primary_key, COALESCE(v_primary_key_type, 'bigint')
+            ) USING (v_data->>v_primary_key);
+            GET DIAGNOSTICS v_row_count = ROW_COUNT;
+    END CASE;
+
+    -- STEP 7: Calculate execution time and prepare result
+    v_execution_time_ms := EXTRACT(epoch FROM (clock_timestamp() - v_start_time)) * 1000;
+
+    -- Build success result
+    v_result := jsonb_build_object(
+        'success', true,
+        'operation', v_operation,
+        'schema_name', v_schema_name,
+        'table_name', v_table_name,
+        'rows_affected', v_row_count,
+        'execution_time_ms', v_execution_time_ms,
+        'operation_id', v_operation_id,
+        'timestamp', now()
+    );
+
+    -- Add optional fields
+    IF v_content_hash IS NOT NULL THEN
+        v_result := v_result || jsonb_build_object('content_hash', v_content_hash);
+    END IF;
+
+    IF p_check_rbac AND v_rbac_available THEN
+        v_result := v_result || jsonb_build_object(
+            'rbac_check_performed', true,
+            'rbac_user_id', v_external_id,
+            'required_feature', p_required_feature
+        );
+    END IF;
+
+    -- STEP 8: Log successful operation
+    INSERT INTO c77_secure_db_operation_audit (
+        operation_id, schema_name, table_name, operation_type,
+        data_hash, rbac_user_id, rbac_feature, success, execution_time_ms
+    ) VALUES (
+        v_operation_id, v_schema_name, v_table_name, v_operation,
+        v_content_hash, v_external_id, p_required_feature, true, v_execution_time_ms
+    );
+
+    -- STEP 9: Clean up and return
+    PERFORM set_config('c77_secure_db.auth_token', '', true);
+    RETURN v_result;
+
+EXCEPTION WHEN OTHERS THEN
+    -- Error handling and cleanup
+    v_error_message := SQLERRM;
+    v_execution_time_ms := EXTRACT(epoch FROM (clock_timestamp() - v_start_time)) * 1000;
+
+    -- Always clean up authorization token
+    PERFORM set_config('c77_secure_db.auth_token', '', true);
+
+    -- Log failed operation
+    BEGIN
+        INSERT INTO c77_secure_db_operation_audit (
+            operation_id, schema_name, table_name, operation_type,
+            rbac_user_id, rbac_feature, success, error_message, execution_time_ms
+        ) VALUES (
+            v_operation_id, COALESCE(v_schema_name, 'unknown'), COALESCE(v_table_name, 'unknown'),
+            COALESCE(v_operation, 'unknown'), v_external_id, p_required_feature,
+            false, v_error_message, v_execution_time_ms
+        );
+    EXCEPTION WHEN OTHERS THEN
+        -- Ignore audit logging errors to avoid masking the original error
+        NULL;
+    END;
+
+    RETURN jsonb_build_object(
+        'success', false,
+        'error', v_error_message,
+        'error_code', SQLSTATE,
+        'operation_id', v_operation_id,
+        'execution_time_ms', v_execution_time_ms,
+        'timestamp', now()
+    );
+END;
+$$;
+
+-- Backward compatibility function (original signature)
+CREATE OR REPLACE FUNCTION c77_secure_db_operation(p_json_data JSONB)
+RETURNS JSONB LANGUAGE plpgsql AS $$
+BEGIN
+    RETURN c77_secure_db_operation(p_json_data, false, NULL, NULL, NULL);
+END;
+$$;
+
+-- Grant permissions for the main operation function
+GRANT EXECUTE ON FUNCTION c77_secure_db_operation(JSONB, BOOLEAN, TEXT, TEXT, TEXT) TO c77_secure_db_user;
+GRANT EXECUTE ON FUNCTION c77_secure_db_operation(JSONB) TO c77_secure_db_user;
+
+COMMENT ON FUNCTION c77_secure_db_operation(JSONB, BOOLEAN, TEXT, TEXT, TEXT) IS 'Main secure operation function with optional RBAC integration';
+COMMENT ON FUNCTION c77_secure_db_operation(JSONB) IS 'Backward compatible secure operation function';
+
+-- Add these to the main extension SQL file
+
+-- =============================================================================
+-- VERIFICATION AND UTILITY FUNCTIONS
+-- =============================================================================
+
+-- Verify content hashes for all records in a table
+CREATE OR REPLACE FUNCTION c77_secure_db_verify_content_hashes(
+    p_schema_name TEXT,
+    p_table_name TEXT,
+    p_fix_mismatches BOOLEAN DEFAULT false,
+    p_batch_size INTEGER DEFAULT 1000
+) RETURNS JSONB
+    LANGUAGE plpgsql AS $$
+DECLARE
+    v_cursor REFCURSOR;
+    v_record RECORD;
+    v_data JSONB;
+    v_data_cleaned JSONB;
+    v_calculated_hash TEXT;
+    v_stored_hash TEXT;
+    v_mismatches JSONB[] := '{}';
+    v_total_records INTEGER := 0;
+    v_mismatch_count INTEGER := 0;
+    v_fixed_count INTEGER := 0;
+    v_batch_count INTEGER := 0;
+    v_auth_token UUID;
+    v_special_columns TEXT[] := ARRAY['content_hash', 'created_at', 'updated_at', 'deleted_at', 'hash_version'];
+    v_column TEXT;
+    v_query TEXT;
+    v_primary_key TEXT;
+BEGIN
+    -- Validate table exists and has content_hash column
+    IF NOT EXISTS (
+        SELECT 1 FROM information_schema.tables
+        WHERE table_schema = p_schema_name AND table_name = p_table_name
+    ) THEN
+        RETURN jsonb_build_object(
+                'success', false,
+                'error', format('Table %I.%I does not exist', p_schema_name, p_table_name),
+                'timestamp', now()
+               );
+    END IF;
+
+    IF NOT EXISTS (
+        SELECT 1 FROM information_schema.columns
+        WHERE table_schema = p_schema_name AND table_name = p_table_name AND column_name = 'content_hash'
+    ) THEN
+        RETURN jsonb_build_object(
+                'success', false,
+                'error', format('Table %I.%I does not have a content_hash column', p_schema_name, p_table_name),
+                'timestamp', now()
+               );
+    END IF;
+
+    -- Get primary key
+    SELECT a.attname INTO v_primary_key
+    FROM pg_constraint c
+             JOIN pg_attribute a ON a.attrelid = c.conrelid AND a.attnum = ANY(c.conkey)
+    WHERE c.conrelid = format('%I.%I', p_schema_name, p_table_name)::regclass
+      AND c.contype = 'p'
+    LIMIT 1;
+
+    IF v_primary_key IS NULL THEN
+        RETURN jsonb_build_object(
+                'success', false,
+                'error', format('Table %I.%I does not have a primary key', p_schema_name, p_table_name),
+                'timestamp', now()
+               );
+    END IF;
+
+    -- Create authorization token if we need to fix mismatches
+    IF p_fix_mismatches THEN
+        v_auth_token := c77_secure_db_create_auth_token('hash_verification');
+        PERFORM set_config('c77_secure_db.auth_token', v_auth_token::text, true);
+    END IF;
+
+    -- Build query to fetch all records
+    v_query := format(
+            'SELECT * FROM %I.%I ORDER BY %I',
+            p_schema_name, p_table_name, v_primary_key
+               );
+
+    -- Open cursor
+    OPEN v_cursor FOR EXECUTE v_query;
+
+    LOOP
+        FETCH v_cursor INTO v_record;
+        EXIT WHEN NOT FOUND;
+
+        v_total_records := v_total_records + 1;
+        v_batch_count := v_batch_count + 1;
+
+        -- Convert record to JSONB and clean it
+        v_data := row_to_json(v_record)::jsonb;
+        v_data_cleaned := v_data;
+
+        -- Remove special columns
+        FOREACH v_column IN ARRAY v_special_columns LOOP
+                v_data_cleaned := v_data_cleaned - v_column;
+            END LOOP;
+
+        -- Remove primary key from hash calculation
+        v_data_cleaned := v_data_cleaned - v_primary_key;
+
+        -- Calculate hash
+        v_calculated_hash := c77_secure_db_calculate_content_hash(p_schema_name, p_table_name, v_data_cleaned);
+        v_stored_hash := v_data->>'content_hash';
+
+        -- Check for mismatch
+        IF v_calculated_hash != v_stored_hash THEN
+            v_mismatch_count := v_mismatch_count + 1;
+
+            -- Record mismatch details
+            v_mismatches := v_mismatches || jsonb_build_object(
+                    'primary_key_value', v_data->>v_primary_key,
+                    'stored_hash', v_stored_hash,
+                    'calculated_hash', v_calculated_hash,
+                    'hash_version', COALESCE(v_data->>'hash_version', '1')
+                                            );
+
+            -- Fix if requested
+            IF p_fix_mismatches THEN
+                EXECUTE format(
+                        'UPDATE %I.%I SET content_hash = $1, hash_version = COALESCE(hash_version, 1) + 1, updated_at = now() WHERE %I = $2',
+                        p_schema_name, p_table_name, v_primary_key
+                        ) USING v_calculated_hash, (v_data->>v_primary_key)::BIGINT;
+
+                v_fixed_count := v_fixed_count + 1;
+            END IF;
+        END IF;
+
+        -- Progress notification
+        IF v_batch_count >= p_batch_size THEN
+            v_batch_count := 0;
+            RAISE NOTICE 'Processed % records, found % mismatches so far', v_total_records, v_mismatch_count;
+        END IF;
+    END LOOP;
+
+    CLOSE v_cursor;
+
+    -- Clean up authorization token
+    IF p_fix_mismatches THEN
+        PERFORM set_config('c77_secure_db.auth_token', '', true);
+    END IF;
+
+    RETURN jsonb_build_object(
+            'success', true,
+            'total_records', v_total_records,
+            'mismatch_count', v_mismatch_count,
+            'fixed_count', v_fixed_count,
+            'mismatches', v_mismatches,
+            'batch_size', p_batch_size,
+            'timestamp', now()
+           );
+
+EXCEPTION WHEN OTHERS THEN
+    -- Clean up on error
+    IF p_fix_mismatches THEN
+        PERFORM set_config('c77_secure_db.auth_token', '', true);
+    END IF;
+
+    BEGIN CLOSE v_cursor; EXCEPTION WHEN OTHERS THEN NULL; END;
+
+    RETURN jsonb_build_object(
+            'success', false,
+            'error', SQLERRM,
+            'error_code', SQLSTATE,
+            'records_processed', v_total_records,
+            'timestamp', now()
+           );
+END;
+$$;
+
+-- Bulk freshness checking
+CREATE OR REPLACE FUNCTION c77_secure_db_check_freshness_bulk(
+    p_schema_name TEXT,
+    p_table_name TEXT,
+    p_data JSONB
+) RETURNS JSONB
+    LANGUAGE plpgsql STABLE AS $$
+DECLARE
+    v_record JSONB;
+    v_results JSONB[] := '{}';
+    v_result JSONB;
+    v_total_count INTEGER := 0;
+    v_fresh_count INTEGER := 0;
+    v_stale_count INTEGER := 0;
+    v_error_count INTEGER := 0;
+BEGIN
+    -- Validate input is array
+    IF jsonb_typeof(p_data) != 'array' THEN
+        RETURN jsonb_build_object(
+                'success', false,
+                'error', 'Input data must be a JSONB array',
+                'timestamp', now()
+               );
+    END IF;
+
+    -- Process each record
+    FOR v_record IN SELECT jsonb_array_elements(p_data) LOOP
+            v_total_count := v_total_count + 1;
+
+            -- Check freshness of this record
+            v_result := c77_secure_db_check_freshness(p_schema_name, p_table_name, v_record);
+            v_results := v_results || v_result;
+
+            -- Count results
+            IF (v_result->>'success')::BOOLEAN THEN
+                IF (v_result->>'fresh')::BOOLEAN THEN
+                    v_fresh_count := v_fresh_count + 1;
+                ELSE
+                    v_stale_count := v_stale_count + 1;
+                END IF;
+            ELSE
+                v_error_count := v_error_count + 1;
+            END IF;
+        END LOOP;
+
+    RETURN jsonb_build_object(
+            'success', true,
+            'total_records', v_total_count,
+            'fresh_records', v_fresh_count,
+            'stale_records', v_stale_count,
+            'error_records', v_error_count,
+            'results', v_results,
+            'timestamp', now()
+           );
+
+EXCEPTION WHEN OTHERS THEN
+    RETURN jsonb_build_object(
+            'success', false,
+            'error', SQLERRM,
+            'error_code', SQLSTATE,
+            'records_processed', v_total_count,
+            'timestamp', now()
+           );
+END;
+$$;
+
+-- Generate operation templates for easier usage
+CREATE OR REPLACE FUNCTION c77_secure_db_get_operation_template(
+    p_schema_name TEXT,
+    p_table_name TEXT,
+    p_operation TEXT
+) RETURNS TEXT
+    LANGUAGE plpgsql AS $$
+DECLARE
+    v_operation TEXT := lower(p_operation);
+    v_exclude_columns TEXT[] := ARRAY['id', 'content_hash', 'created_at', 'updated_at', 'deleted_at', 'hash_version'];
+    v_columns TEXT[];
+    v_primary_key TEXT;
+    v_data_template JSONB;
+    v_template JSONB;
+BEGIN
+    -- Validate inputs
+    IF NOT EXISTS (
+        SELECT 1 FROM information_schema.tables
+        WHERE table_schema = p_schema_name AND table_name = p_table_name
+    ) THEN
+        RETURN format('-- Error: Table %I.%I does not exist', p_schema_name, p_table_name);
+    END IF;
+
+    IF v_operation NOT IN ('insert', 'update', 'upsert', 'delete', 'soft_delete') THEN
+        RETURN '-- Error: Invalid operation. Must be one of: insert, update, upsert, delete, soft_delete';
+    END IF;
+
+    -- Get primary key
+    SELECT a.attname INTO v_primary_key
+    FROM pg_constraint c
+             JOIN pg_attribute a ON a.attrelid = c.conrelid AND a.attnum = ANY(c.conkey)
+    WHERE c.conrelid = format('%I.%I', p_schema_name, p_table_name)::regclass
+      AND c.contype = 'p'
+    LIMIT 1;
+
+    -- Get columns for data template
+    SELECT array_agg(column_name) INTO v_columns
+    FROM information_schema.columns
+    WHERE table_schema = p_schema_name AND table_name = p_table_name
+      AND column_name != ALL(v_exclude_columns);
+
+    -- Build data template
+    v_data_template := jsonb_object_agg(
+                               column_name,
+                               CASE
+                                   WHEN data_type IN ('character varying', 'text') THEN '""'
+                                   WHEN data_type IN ('integer', 'bigint', 'smallint') THEN '0'
+                                   WHEN data_type = 'boolean' THEN 'false'
+                                   WHEN data_type IN ('timestamp with time zone', 'timestamp without time zone') THEN '"2025-01-01T00:00:00Z"'
+                                   WHEN data_type = 'jsonb' THEN '{}'
+                                   ELSE 'null'
+                                   END
+                       )
+                       FROM information_schema.columns
+                       WHERE table_schema = p_schema_name AND table_name = p_table_name
+                         AND column_name != ALL(v_exclude_columns);
+
+    -- Add primary key for operations that need it
+    IF v_operation IN ('update', 'upsert', 'delete', 'soft_delete') AND v_primary_key IS NOT NULL THEN
+        v_data_template := v_data_template || jsonb_build_object(v_primary_key, 0);
+    END IF;
+
+    -- Build template
+    v_template := jsonb_build_object(
+            'schema_name', p_schema_name,
+            'table_name', p_table_name,
+            'operation', v_operation,
+            'data', v_data_template
+                  );
+
+    -- Add primary key field for operations that need it
+    IF v_operation IN ('update', 'delete', 'soft_delete') THEN
+        v_template := v_template || jsonb_build_object('primary_key', COALESCE(v_primary_key, 'id'));
+    END IF;
+
+    -- Return formatted SQL
+    RETURN format(
+            E'-- %s operation template for %I.%I\nSELECT c77_secure_db_operation(\n''%s''::jsonb\n);',
+            upper(v_operation), p_schema_name, p_table_name, jsonb_pretty(v_template)
+           );
+
+EXCEPTION WHEN OTHERS THEN
+    RETURN format('-- Error generating template: %s', SQLERRM);
+END;
+$$;
+
+-- Maintenance function to clean up expired tokens
+CREATE OR REPLACE FUNCTION c77_secure_db_cleanup_expired_tokens()
+    RETURNS INTEGER
+    LANGUAGE plpgsql AS $$
+DECLARE
+    v_deleted_count INTEGER;
+BEGIN
+    DELETE FROM c77_secure_db_auth_tokens
+    WHERE expires_at < (now() - interval '1 minute') OR used = true;
+
+    GET DIAGNOSTICS v_deleted_count = ROW_COUNT;
+    RETURN v_deleted_count;
+END;
+$$;
+
+-- System health check function
+CREATE OR REPLACE FUNCTION c77_secure_db_health_check()
+    RETURNS JSONB
+    LANGUAGE plpgsql AS $$
+DECLARE
+    v_rbac_available BOOLEAN;
+    v_secure_schemas_count INTEGER;
+    v_active_tokens INTEGER;
+    v_recent_operations INTEGER;
+    v_recent_errors INTEGER;
+BEGIN
+    -- Check c77_rbac availability
+    SELECT EXISTS(SELECT 1 FROM pg_extension WHERE extname = 'c77_rbac') INTO v_rbac_available;
+
+    -- Count secure schemas
+    SELECT count(*) INTO v_secure_schemas_count FROM c77_secure_db_secure_schemas;
+
+    -- Count active tokens
+    SELECT count(*) INTO v_active_tokens FROM c77_secure_db_auth_tokens WHERE expires_at > now();
+
+    -- Count recent operations (last hour)
+    SELECT count(*) INTO v_recent_operations
+    FROM c77_secure_db_operation_audit
+    WHERE created_at > now() - interval '1 hour';
+
+    -- Count recent errors (last hour)
+    SELECT count(*) INTO v_recent_errors
+    FROM c77_secure_db_operation_audit
+    WHERE created_at > now() - interval '1 hour' AND success = false;
+
+    RETURN jsonb_build_object(
+            'success', true,
+            'extension_version', '2.0',
+            'rbac_available', v_rbac_available,
+            'secure_schemas_count', v_secure_schemas_count,
+            'active_tokens', v_active_tokens,
+            'recent_operations_1h', v_recent_operations,
+            'recent_errors_1h', v_recent_errors,
+            'error_rate_1h', CASE
+                                 WHEN v_recent_operations > 0 THEN round((v_recent_errors::numeric / v_recent_operations * 100), 2)
+                                 ELSE 0
+                END,
+            'timestamp', now()
+           );
+END;
+$$;
+
+-- Grant permissions for utility functions
+GRANT EXECUTE ON FUNCTION c77_secure_db_verify_content_hashes(TEXT, TEXT, BOOLEAN, INTEGER) TO c77_secure_db_admin;
+GRANT EXECUTE ON FUNCTION c77_secure_db_check_freshness_bulk(TEXT, TEXT, JSONB) TO c77_secure_db_readonly;
+GRANT EXECUTE ON FUNCTION c77_secure_db_get_operation_template(TEXT, TEXT, TEXT) TO c77_secure_db_user;
+GRANT EXECUTE ON FUNCTION c77_secure_db_cleanup_expired_tokens() TO c77_secure_db_admin;
+GRANT EXECUTE ON FUNCTION c77_secure_db_health_check() TO c77_secure_db_readonly;
+
+-- Add comments
+COMMENT ON FUNCTION c77_secure_db_verify_content_hashes(TEXT, TEXT, BOOLEAN, INTEGER) IS 'Verifies content hashes for all records in a table with optional fixing';
+COMMENT ON FUNCTION c77_secure_db_check_freshness_bulk(TEXT, TEXT, JSONB) IS 'Bulk freshness checking for multiple records';
+COMMENT ON FUNCTION c77_secure_db_get_operation_template(TEXT, TEXT, TEXT) IS 'Generates SQL templates for secure operations';
+COMMENT ON FUNCTION c77_secure_db_cleanup_expired_tokens() IS 'Maintenance function to clean up expired authorization tokens';
+COMMENT ON FUNCTION c77_secure_db_health_check() IS 'System health check and status report';
+
+-- =============================================================================
+-- TESTING AND VALIDATION FRAMEWORK
+-- =============================================================================
+
+-- Comprehensive security test suite
+CREATE OR REPLACE FUNCTION c77_secure_db_test_security()
+    RETURNS JSONB
+    LANGUAGE plpgsql AS $$
+DECLARE
+    v_test_results JSONB := '{}';
+v_tests_passed INTEGER := 0;
+v_tests_failed INTEGER := 0;
+v_test_schema TEXT := 'c77_test_' || extract(epoch from now())::bigint;
+v_operation_result JSONB;
+BEGIN
+    -- Create test environment
+EXECUTE format('CREATE SCHEMA %I', v_test_schema);
+
+-- Create test table
+EXECUTE format('
+        CREATE TABLE %I.test_secure_table (
+            id BIGSERIAL PRIMARY KEY,
+            name TEXT NOT NULL,
+            description TEXT,
+            content_hash TEXT,
+            hash_version INTEGER DEFAULT 1,
+            created_at TIMESTAMPTZ DEFAULT NOW(),
+            updated_at TIMESTAMPTZ DEFAULT NOW(),
+            deleted_at TIMESTAMPTZ
+        )', v_test_schema);
+
+-- Register schema as secure
+PERFORM c77_secure_db_manage_secure_schemas('add', v_test_schema);
+
+-- TEST 1: Verify direct INSERT is blocked
+BEGIN
+EXECUTE format('INSERT INTO %I.test_secure_table (name) VALUES (''bypass_test'')', v_test_schema);
+
+v_tests_failed := v_tests_failed + 1;
+v_test_results := v_test_results || jsonb_build_object(
+            'direct_insert_blocked', jsonb_build_object(
+                'status', 'FAILED',
+                'message', 'Direct INSERT was allowed - CRITICAL SECURITY FLAW!'
+            )
+        );
+EXCEPTION WHEN insufficient_privilege THEN
+        v_tests_passed := v_tests_passed + 1;
+v_test_results := v_test_results || jsonb_build_object(
+            'direct_insert_blocked', jsonb_build_object(
+                'status', 'PASSED',
+                'message', 'Direct INSERT correctly blocked'
+            )
+        );
+END;
+
+-- TEST 2: Verify direct UPDATE is blocked
+BEGIN
+EXECUTE format('UPDATE %I.test_secure_table SET name = ''hacked'' WHERE id = 1', v_test_schema);
+
+v_tests_failed := v_tests_failed + 1;
+v_test_results := v_test_results || jsonb_build_object(
+            'direct_update_blocked', jsonb_build_object(
+                'status', 'FAILED',
+                'message', 'Direct UPDATE was allowed - CRITICAL SECURITY FLAW!'
+            )
+        );
+EXCEPTION WHEN insufficient_privilege THEN
+        v_tests_passed := v_tests_passed + 1;
+v_test_results := v_test_results || jsonb_build_object(
+            'direct_update_blocked', jsonb_build_object(
+                'status', 'PASSED',
+                'message', 'Direct UPDATE correctly blocked'
+            )
+        );
+END;
+
+-- TEST 3: Verify direct DELETE is blocked
+BEGIN
+EXECUTE format('DELETE FROM %I.test_secure_table WHERE id = 1', v_test_schema);
+
+v_tests_failed := v_tests_failed + 1;
+v_test_results := v_test_results || jsonb_build_object(
+            'direct_delete_blocked', jsonb_build_object(
+                'status', 'FAILED',
+                'message', 'Direct DELETE was allowed - CRITICAL SECURITY FLAW!'
+            )
+        );
+EXCEPTION WHEN insufficient_privilege THEN
+        v_tests_passed := v_tests_passed + 1;
+v_test_results := v_test_results || jsonb_build_object(
+            'direct_delete_blocked', jsonb_build_object(
+                'status', 'PASSED',
+                'message', 'Direct DELETE correctly blocked'
+            )
+        );
+END;
+
+-- TEST 4: Verify legitimate secure operation works
+BEGIN
+SELECT c77_secure_db_operation(jsonb_build_object(
+        'schema_name', v_test_schema,
+        'table_name', 'test_secure_table',
+        'operation', 'insert',
+        'data', jsonb_build_object('name', 'legitimate_test', 'description', 'This should work')
+                               )) INTO v_operation_result;
+
+IF (v_operation_result->>'success')::boolean THEN
+            v_tests_passed := v_tests_passed + 1;
+v_test_results := v_test_results || jsonb_build_object(
+                'legitimate_operation', jsonb_build_object(
+                    'status', 'PASSED',
+                    'message', 'Secure operation succeeded',
+                    'operation_id', v_operation_result->>'operation_id'
+                )
+            );
+ELSE
+            v_tests_failed := v_tests_failed + 1;
+v_test_results := v_test_results || jsonb_build_object(
+                'legitimate_operation', jsonb_build_object(
+                    'status', 'FAILED',
+                    'message', 'Secure operation failed: ' || (v_operation_result->>'error')
+                )
+            );
+END IF;
+EXCEPTION WHEN OTHERS THEN
+        v_tests_failed := v_tests_failed + 1;
+v_test_results := v_test_results || jsonb_build_object(
+            'legitimate_operation', jsonb_build_object(
+                'status', 'ERROR',
+                'message', SQLERRM
+            )
+        );
+END;
+
+-- TEST 5: Test token expiration (simulate expired token)
+BEGIN
+-- This test verifies that expired tokens don't work
+PERFORM set_config('c77_secure_db.auth_token', gen_random_uuid()::text, true);
+EXECUTE format('INSERT INTO %I.test_secure_table (name) VALUES (''token_test'')', v_test_schema);
+
+v_tests_failed := v_tests_failed + 1;
+v_test_results := v_test_results || jsonb_build_object(
+            'token_expiration', jsonb_build_object(
+                'status', 'FAILED',
+                'message', 'Invalid token was accepted - SECURITY FLAW!'
+            )
+        );
+EXCEPTION WHEN insufficient_privilege THEN
+        v_tests_passed := v_tests_passed + 1;
+v_test_results := v_test_results || jsonb_build_object(
+            'token_expiration', jsonb_build_object(
+                'status', 'PASSED',
+                'message', 'Invalid token correctly rejected'
+            )
+        );
+FINALLY
+PERFORM set_config('c77_secure_db.auth_token', '', true);
+END;
+
+-- TEST 6: Test hash calculation and verification
+BEGIN
+-- Insert a record and verify its hash
+SELECT c77_secure_db_operation(jsonb_build_object(
+        'schema_name', v_test_schema,
+        'table_name', 'test_secure_table',
+        'operation', 'insert',
+        'data', jsonb_build_object('name', 'hash_test', 'description', 'Test hash calculation')
+                               )) INTO v_operation_result;
+
+IF (v_operation_result->>'success')::boolean AND (v_operation_result->>'content_hash') IS NOT NULL THEN
+-- Now verify the hash
+DECLARE
+    v_freshness_result JSONB;
+v_record_data JSONB;
+            BEGIN
+                -- Get the inserted record data (simulated)
+v_record_data := jsonb_build_object(
+                    'id', 1, -- Assuming first record
+                    'name', 'hash_test',
+                    'description', 'Test hash calculation'
+                );
+
+v_freshness_result := c77_secure_db_check_freshness(v_test_schema, 'test_secure_table', v_record_data);
+
+IF (v_freshness_result->>'success')::boolean AND (v_freshness_result->>'fresh')::boolean THEN
+                    v_tests_passed := v_tests_passed + 1;
+v_test_results := v_test_results || jsonb_build_object(
+                        'hash_verification', jsonb_build_object(
+                            'status', 'PASSED',
+                            'message', 'Hash calculation and verification working correctly'
+                        )
+                    );
+ELSE
+                    v_tests_failed := v_tests_failed + 1;
+v_test_results := v_test_results || jsonb_build_object(
+                        'hash_verification', jsonb_build_object(
+                            'status', 'FAILED',
+                            'message', 'Hash verification failed: ' || (v_freshness_result->>'error')
+                        )
+                    );
+END IF;
+END;
+ELSE
+            v_tests_failed := v_tests_failed + 1;
+v_test_results := v_test_results || jsonb_build_object(
+                'hash_verification', jsonb_build_object(
+                    'status', 'FAILED',
+                    'message', 'Hash was not calculated during insert'
+                )
+            );
+END IF;
+EXCEPTION WHEN OTHERS THEN
+        v_tests_failed := v_tests_failed + 1;
+v_test_results := v_test_results || jsonb_build_object(
+            'hash_verification', jsonb_build_object(
+                'status', 'ERROR',
+                'message', SQLERRM
+            )
+        );
+END;
+
+-- Cleanup test environment
+BEGIN
+PERFORM c77_secure_db_manage_secure_schemas('remove', v_test_schema);
+EXECUTE format('DROP SCHEMA %I CASCADE', v_test_schema);
+EXCEPTION WHEN OTHERS THEN
+        -- Log cleanup failure but don't fail the test
+        v_test_results := v_test_results || jsonb_build_object(
+            'cleanup_warning', 'Failed to cleanup test schema: ' || SQLERRM
+        );
+END;
+
+RETURN jsonb_build_object(
+        'test_suite', 'c77_secure_db_security',
+        'version', '2.0',
+        'summary', jsonb_build_object(
+            'tests_passed', v_tests_passed,
+            'tests_failed', v_tests_failed,
+            'total_tests', v_tests_passed + v_tests_failed,
+            'success_rate', CASE
+                WHEN (v_tests_passed + v_tests_failed) > 0 THEN
+                    round((v_tests_passed::numeric / (v_tests_passed + v_tests_failed) * 100), 2)
+                ELSE 0
+            END
+        ),
+        'overall_status', CASE
+            WHEN v_tests_failed = 0 THEN 'ALL_TESTS_PASSED'
+            ELSE 'SECURITY_ISSUES_DETECTED'
+        END,
+        'test_results', v_test_results,
+        'test_schema_used', v_test_schema,
+        'timestamp', now()
+    );
+END;
+$$;
+
+-- Test RBAC integration
+CREATE OR REPLACE FUNCTION c77_secure_db_test_rbac_integration()
+    RETURNS JSONB
+    LANGUAGE plpgsql AS $$
+DECLARE
+    v_rbac_available BOOLEAN;
+v_test_results JSONB := '{}';
+v_tests_passed INTEGER := 0;
+v_tests_failed INTEGER := 0;
+v_test_schema TEXT := 'c77_rbac_test_' || extract(epoch from now())::bigint;
+v_operation_result JSONB;
+BEGIN
+    -- Check if c77_rbac is available
+SELECT EXISTS(SELECT 1 FROM pg_extension WHERE extname = 'c77_rbac') INTO v_rbac_available;
+
+IF NOT v_rbac_available THEN
+        RETURN jsonb_build_object(
+            'test_suite', 'c77_secure_db_rbac_integration',
+            'rbac_available', false,
+            'message', 'c77_rbac extension not available - skipping RBAC tests',
+            'overall_status', 'SKIPPED',
+            'timestamp', now()
+        );
+END IF;
+
+-- Create test environment
+EXECUTE format('CREATE SCHEMA %I', v_test_schema);
+EXECUTE format('
+        CREATE TABLE %I.rbac_test_table (
+            id BIGSERIAL PRIMARY KEY,
+            name TEXT NOT NULL,
+            content_hash TEXT,
+            created_at TIMESTAMPTZ DEFAULT NOW(),
+            updated_at TIMESTAMPTZ DEFAULT NOW()
+        )', v_test_schema);
+
+PERFORM c77_secure_db_manage_secure_schemas('add', v_test_schema);
+
+-- Set up RBAC test data
+PERFORM c77_rbac_assign_subject('test_user', 'secure_operator', 'global', 'all');
+PERFORM c77_rbac_grant_feature('secure_operator', 'secure_db_insert');
+PERFORM c77_rbac_grant_feature('secure_operator', 'secure_db_update');
+
+-- TEST 1: Operation with valid RBAC permissions should succeed
+BEGIN
+PERFORM set_config('c77_rbac.external_id', 'test_user', true);
+
+SELECT c77_secure_db_operation(
+               jsonb_build_object(
+                       'schema_name', v_test_schema,
+                       'table_name', 'rbac_test_table',
+                       'operation', 'insert',
+                       'data', jsonb_build_object('name', 'rbac_test_record')
+               ),
+               true, -- check_rbac
+               'secure_db_insert'
+       ) INTO v_operation_result;
+
+IF (v_operation_result->>'success')::boolean THEN
+            v_tests_passed := v_tests_passed + 1;
+v_test_results := v_test_results || jsonb_build_object(
+                'valid_rbac_permission', jsonb_build_object(
+                    'status', 'PASSED',
+                    'message', 'Operation with valid RBAC permission succeeded'
+                )
+            );
+ELSE
+            v_tests_failed := v_tests_failed + 1;
+v_test_results := v_test_results || jsonb_build_object(
+                'valid_rbac_permission', jsonb_build_object(
+                    'status', 'FAILED',
+                    'message', 'Operation failed despite valid RBAC permission: ' || (v_operation_result->>'error')
+                )
+            );
+END IF;
+EXCEPTION WHEN OTHERS THEN
+        v_tests_failed := v_tests_failed + 1;
+v_test_results := v_test_results || jsonb_build_object(
+            'valid_rbac_permission', jsonb_build_object(
+                'status', 'ERROR',
+                'message', SQLERRM
+            )
+        );
+END;
+
+-- TEST 2: Operation without required RBAC permission should fail
+BEGIN
+PERFORM set_config('c77_rbac.external_id', 'test_user', true);
+
+SELECT c77_secure_db_operation(
+               jsonb_build_object(
+                       'schema_name', v_test_schema,
+                       'table_name', 'rbac_test_table',
+                       'operation', 'insert',
+                       'data', jsonb_build_object('name', 'unauthorized_record')
+               ),
+               true, -- check_rbac
+               'secure_db_delete' -- User doesn't have this permission
+       ) INTO v_operation_result;
+
+IF NOT (v_operation_result->>'success')::boolean AND (v_operation_result->>'error') LIKE '%Insufficient permissions%' THEN
+            v_tests_passed := v_tests_passed + 1;
+v_test_results := v_test_results || jsonb_build_object(
+                'invalid_rbac_permission', jsonb_build_object(
+                    'status', 'PASSED',
+                    'message', 'Operation correctly blocked due to insufficient RBAC permissions'
+                )
+            );
+ELSE
+            v_tests_failed := v_tests_failed + 1;
+v_test_results := v_test_results || jsonb_build_object(
+                'invalid_rbac_permission', jsonb_build_object(
+                    'status', 'FAILED',
+                    'message', 'Operation should have been blocked by RBAC but was not'
+                )
+            );
+END IF;
+EXCEPTION WHEN OTHERS THEN
+        v_tests_failed := v_tests_failed + 1;
+v_test_results := v_test_results || jsonb_build_object(
+            'invalid_rbac_permission', jsonb_build_object(
+                'status', 'ERROR',
+                'message', SQLERRM
+            )
+        );
+END;
+
+-- TEST 3: Operation without user context should fail
+BEGIN
+PERFORM set_config('c77_rbac.external_id', '', true);
+
+SELECT c77_secure_db_operation(
+               jsonb_build_object(
+                       'schema_name', v_test_schema,
+                       'table_name', 'rbac_test_table',
+                       'operation', 'insert',
+                       'data', jsonb_build_object('name', 'no_context_record')
+               ),
+               true, -- check_rbac
+               'secure_db_insert'
+       ) INTO v_operation_result;
+
+IF NOT (v_operation_result->>'success')::boolean AND (v_operation_result->>'error') LIKE '%no user context%' THEN
+            v_tests_passed := v_tests_passed + 1;
+v_test_results := v_test_results || jsonb_build_object(
+                'no_user_context', jsonb_build_object(
+                    'status', 'PASSED',
+                    'message', 'Operation correctly blocked due to missing user context'
+                )
+            );
+ELSE
+            v_tests_failed := v_tests_failed + 1;
+v_test_results := v_test_results || jsonb_build_object(
+                'no_user_context', jsonb_build_object(
+                    'status', 'FAILED',
+                    'message', 'Operation should have been blocked due to missing user context'
+                )
+            );
+END IF;
+EXCEPTION WHEN OTHERS THEN
+        v_tests_failed := v_tests_failed + 1;
+v_test_results := v_test_results || jsonb_build_object(
+            'no_user_context', jsonb_build_object(
+                'status', 'ERROR',
+                'message', SQLERRM
+            )
+        );
+END;
+
+-- Cleanup RBAC test data
+BEGIN
+PERFORM c77_rbac_revoke_subject_role('test_user', 'secure_operator', 'global', 'all');
+PERFORM c77_rbac_revoke_feature('secure_operator', 'secure_db_insert');
+PERFORM c77_rbac_revoke_feature('secure_operator', 'secure_db_update');
+EXCEPTION WHEN OTHERS THEN
+        -- Ignore cleanup errors
+        NULL;
+END;
+
+-- Cleanup test environment
+BEGIN
+PERFORM c77_secure_db_manage_secure_schemas('remove', v_test_schema);
+EXECUTE format('DROP SCHEMA %I CASCADE', v_test_schema);
+EXCEPTION WHEN OTHERS THEN
+        v_test_results := v_test_results || jsonb_build_object(
+            'cleanup_warning', 'Failed to cleanup test schema: ' || SQLERRM
+        );
+END;
+
+RETURN jsonb_build_object(
+        'test_suite', 'c77_secure_db_rbac_integration',
+        'rbac_available', true,
+        'summary', jsonb_build_object(
+            'tests_passed', v_tests_passed,
+            'tests_failed', v_tests_failed,
+            'total_tests', v_tests_passed + v_tests_failed,
+            'success_rate', CASE
+                WHEN (v_tests_passed + v_tests_failed) > 0 THEN
+                    round((v_tests_passed::numeric / (v_tests_passed + v_tests_failed) * 100), 2)
+                ELSE 0
+            END
+        ),
+        'overall_status', CASE
+            WHEN v_tests_failed = 0 THEN 'ALL_TESTS_PASSED'
+            ELSE 'RBAC_INTEGRATION_ISSUES'
+        END,
+        'test_results', v_test_results,
+        'timestamp', now()
+    );
+END;
+$$;
+
+-- Master test runner - runs all tests
+CREATE OR REPLACE FUNCTION c77_secure_db_run_all_tests()
+    RETURNS JSONB
+    LANGUAGE plpgsql AS $$
+DECLARE
+    v_security_results JSONB;
+v_rbac_results JSONB;
+v_health_results JSONB;
+v_overall_status TEXT := 'ALL_TESTS_PASSED';
+BEGIN
+    -- Run security tests
+v_security_results := c77_secure_db_test_security();
+
+    -- Run RBAC integration tests
+v_rbac_results := c77_secure_db_test_rbac_integration();
+
+    -- Run health check
+v_health_results := c77_secure_db_health_check();
+
+    -- Determine overall status
+IF (v_security_results->>'overall_status') != 'ALL_TESTS_PASSED' THEN
+        v_overall_status := 'SECURITY_ISSUES_DETECTED';
+ELSIF (v_rbac_results->>'overall_status') NOT IN ('ALL_TESTS_PASSED', 'SKIPPED') THEN
+        v_overall_status := 'RBAC_INTEGRATION_ISSUES';
+END IF;
+
+RETURN jsonb_build_object(
+        'test_suite', 'c77_secure_db_complete',
+        'version', '2.0',
+        'overall_status', v_overall_status,
+        'security_tests', v_security_results,
+        'rbac_integration_tests', v_rbac_results,
+        'health_check', v_health_results,
+        'recommendation', CASE v_overall_status
+            WHEN 'ALL_TESTS_PASSED' THEN 'Extension is ready for production use'
+            WHEN 'SECURITY_ISSUES_DETECTED' THEN 'CRITICAL: Fix security issues before any production use'
+            WHEN 'RBAC_INTEGRATION_ISSUES' THEN 'RBAC integration needs attention - can use without RBAC'
+            ELSE 'Review test results and address issues'
+        END,
+        'timestamp', now()
+    );
+END;
+$$;
+
+-- Grant permissions for test functions
+GRANT EXECUTE ON FUNCTION c77_secure_db_test_security() TO c77_secure_db_admin;
+GRANT EXECUTE ON FUNCTION c77_secure_db_test_rbac_integration() TO c77_secure_db_admin;
+GRANT EXECUTE ON FUNCTION c77_secure_db_run_all_tests() TO c77_secure_db_admin;
+
+COMMENT ON FUNCTION c77_secure_db_test_security() IS 'Comprehensive security test suite for the extension';
+COMMENT ON FUNCTION c77_secure_db_test_rbac_integration() IS 'Tests integration with c77_rbac extension';
+COMMENT ON FUNCTION c77_secure_db_run_all_tests() IS 'Master test runner that executes all test suites';
+
+
+\echo 'c77_secure_db extension v2.0 loaded successfully!'
+
diff --git a/c77_secure_db.control b/c77_secure_db.control
index 0c7d16c..48792f3 100644
--- a/c77_secure_db.control
+++ b/c77_secure_db.control
@@ -1,5 +1,6 @@
 # c77_secure_db extension control file
 comment = 'Secure database operations with tamper detection and transaction control'
-default_version = '1.0.0'
+default_version = '1.0'
 relocatable = false
 requires = 'pgcrypto'
+suggests = 'c77_rbac'
\ No newline at end of file