# TRACEABILITY.yml - EMR-001: Migración y Robustecimiento BD

epic_code: EMR-001
epic_name: Migración y Robustecimiento de Base de Datos
phase: 2
phase_name: Robustecimiento
budget_mxn: 50000
story_points: 80
status: completed
sprint: "1-4"
period: "Mes 2, Semana 1-4"

# ============================================================================
# DOCUMENTACIÓN TÉCNICA
# ============================================================================

documentation:
  tasks:
    - id: TASK-MIG-01
      file: tareas/01-migraciones/MIGRACIONES-HISTORICO.md
      title: Histórico de 15 migraciones ejecutadas
      status: completed

    - id: TASK-SCR-01
      file: tareas/02-scripts/DATOS-SEED.md
      title: Seeds de datos iniciales
      status: completed

    - id: TASK-SCR-02
      file: tareas/02-scripts/SCRIPTS-INSTALACION.md
      title: Scripts de instalación y setup
      status: completed

    - id: TASK-DOC-01
      file: tareas/03-documentacion/ESQUEMA-44-TABLAS.md
      title: Documentación esquema 44→89 tablas
      status: completed

    - id: TASK-DOC-02
      file: tareas/03-documentacion/INDICES-PARTE-1.md
      title: Documentación índices (Parte 1)
      status: completed

    - id: TASK-DOC-03
      file: tareas/03-documentacion/INDICES-PARTE-2.md
      title: Documentación índices (Parte 2)
      status: completed

# ============================================================================
# IMPLEMENTACIÓN - BASE DE DATOS
# ============================================================================

implementation:
  database:
    migration_summary:
      before:
        schemas: 1
        tables: 44
        indexes: 30
        functions: 8
        triggers: 5
        rls_policies: 0

      after:
        schemas: 13
        tables: 62
        indexes: 74
        functions: 61
        triggers: 39
        views: 16
        enums: 10
        rls_policies: 24

      improvement:
        schemas_increase: "+1200%"
        tables_increase: "+41%"
        indexes_increase: "+147%"
        functions_increase: "+661%"
        triggers_increase: "+680%"
        rls_policies_increase: "∞"
        query_performance: "+65%"

      note: "ACTUALIZADO 2025-11-08: Números reales de implementación"

    schemas_created:
      - name: auth
        description: autenticación estándar system tables
        tables: 1
        source: sistema auth

      - name: auth_management
        description: Authentication and user management
        tables: 11
        path: apps/database/ddl/schemas/auth_management/
        migrated_from: public schema
        new_tables: 7

      - name: educational_content
        description: Educational content and exercises
        tables: 8
        path: apps/database/ddl/schemas/educational_content/
        migrated_from: public schema
        new_tables: 3

      - name: gamification_system
        description: Gamification mechanics
        tables: 12
        path: apps/database/ddl/schemas/gamification_system/
        migrated_from: public schema
        new_tables: 6

      - name: progress_tracking
        description: User progress and statistics
        tables: 10
        path: apps/database/ddl/schemas/progress_tracking/
        migrated_from: public schema
        new_tables: 4

      - name: admin_dashboard
        description: Admin dashboard and reports
        tables: 6
        path: apps/database/ddl/schemas/admin_dashboard/
        migrated_from: public schema
        new_tables: 4

      - name: content_management
        description: Content management and media
        tables: 7
        path: apps/database/ddl/schemas/content_management/
        migrated_from: public schema
        new_tables: 3

      - name: social_features
        description: Social features (classrooms, etc.)
        tables: 8
        path: apps/database/ddl/schemas/social_features/
        migrated_from: public schema
        new_tables: 5

      - name: storage
        description: File storage and uploads
        tables: 5
        path: apps/database/ddl/schemas/storage/
        new_tables: 5

      - name: audit_logging
        description: Audit logs and system events
        tables: 6
        path: apps/database/ddl/schemas/audit_logging/
        new_tables: 6

      - name: system_configuration
        description: System configuration and settings
        tables: 4
        path: apps/database/ddl/schemas/system_configuration/
        new_tables: 4

      - name: gamilit
        description: Main application schema
        tables: 10
        path: apps/database/ddl/schemas/gamilit/
        migrated_from: public schema
        new_tables: 2

      - name: public
        description: Public schema (minimal use)
        tables: 2
        path: apps/database/ddl/schemas/public/
        remaining_tables: 2

    migrations_executed:
      - number: "001"
        description: Create base schemas structure
        file: apps/database/migrations/001-create-schemas.sql
        status: executed

      - number: "002"
        description: Create auth_management tables
        file: apps/database/migrations/002-auth-management.sql
        status: executed

      - number: "003"
        description: Create educational_content tables
        file: apps/database/migrations/003-educational-content.sql
        status: executed

      - number: "004"
        description: Create gamification_system tables
        file: apps/database/migrations/004-gamification-system.sql
        status: executed

      - number: "005"
        description: Create progress_tracking tables
        file: apps/database/migrations/005-progress-tracking.sql
        status: executed

      - number: "006"
        description: Migrate data from public to new schemas
        file: apps/database/migrations/006-migrate-data.sql
        status: executed
        critical: true

      - number: "007"
        description: Create indexes (batch 1)
        file: apps/database/migrations/007-create-indexes-1.sql
        status: executed

      - number: "008"
        description: Create indexes (batch 2)
        file: apps/database/migrations/008-create-indexes-2.sql
        status: executed

      - number: "009"
        description: Create functions and triggers
        file: apps/database/migrations/009-functions-triggers.sql
        status: executed

      - number: "010"
        description: Implement RLS policies (batch 1)
        file: apps/database/migrations/010-rls-policies-1.sql
        status: executed

      - number: "011"
        description: Implement RLS policies (batch 2)
        file: apps/database/migrations/011-rls-policies-2.sql
        status: executed

      - number: "012"
        description: Create admin_dashboard views
        file: apps/database/migrations/012-admin-views.sql
        status: executed

      - number: "013"
        description: Create materialized views for performance
        file: apps/database/migrations/013-materialized-views.sql
        status: executed

      - number: "014"
        description: Optimize existing queries
        file: apps/database/migrations/014-optimize-queries.sql
        status: executed

      - number: "015"
        description: Final cleanup and validation
        file: apps/database/migrations/015-cleanup.sql
        status: executed

    key_optimizations:
      indexes:
        total_created: 127
        types:
          - btree: 85
          - gin: 25
          - hash: 12
          - unique: 35
        critical_indexes:
          - idx_user_achievements_user_id (btree) → +80% query speed
          - idx_exercises_module_id (btree) → +75% query speed
          - idx_progress_user_module (composite) → +90% query speed
          - idx_user_roles_permissions_gin (gin) → JSONB permissions search

      functions:
        total_created: 28
        categories:
          auth: 6
          gamification: 8
          progress: 6
          admin: 5
          utility: 3
        key_functions:
          - check_and_unlock_achievement() → Auto-unlock logic
          - calculate_rank_progress() → XP calculation
          - assign_role_to_user() → RBAC management
          - log_audit_event() → Centralized auditing

      triggers:
        total_created: 18
        purposes:
          updated_at: 10
          audit: 4
          cascade: 2
          validation: 2

      rls_policies:
        total_created: 45
        enabled_on_tables: 35
        categories:
          select: 15
          insert: 10
          update: 12
          delete: 8

  # ============================================================================
  # IMPLEMENTACIÓN - BACKEND
  # ============================================================================

  backend:
    changes:
      - module: All modules
        type: Schema migration
        description: Updated all queries to use new schema names
        files_affected: ~80 files

      - module: database
        type: New connection pools
        description: Configured connection pools per schema
        file: apps/backend/src/config/database.config.ts

      - module: shared
        type: New utilities
        description: Schema-aware query builders
        path: apps/backend/src/shared/database/

    performance_improvements:
      - metric: Average query time
        before: 250ms
        after: 87ms
        improvement: 65%

      - metric: Complex joins
        before: 1200ms
        after: 320ms
        improvement: 73%

      - metric: Concurrent connections
        before: 50
        after: 200
        improvement: 300%

  # ============================================================================
  # IMPLEMENTACIÓN - FRONTEND
  # ============================================================================

  frontend:
    changes:
      - type: API compatibility maintained
        description: No frontend changes required
        reason: Backend API maintained same interface

# ============================================================================
# TESTING
# ============================================================================

testing:
  database:
    migration_tests:
      - name: Data integrity validation
        status: passed
        description: Verified all data migrated correctly

      - name: Performance benchmarks
        status: passed
        description: All queries meet performance targets

      - name: RLS policy validation
        status: passed
        description: Security policies working correctly

    rollback_tests:
      - name: Rollback simulation
        status: passed
        description: Confirmed ability to rollback if needed

  integration:
    api_tests:
      - name: API backward compatibility
        status: passed
        endpoints_tested: 75

    load_tests:
      - name: Load test with 1000 concurrent users
        status: passed
        result: Passed with 65% better performance

  coverage:
    overall: 92%  # Coverage de SCRIPTS DE MIGRACIÓN (no de funcionalidad)
    migration_scripts: 100%
    rollback_scripts: 100%
    data_validation: 95%
    nota_importante: |
      NOTA CRÍTICA (2025-11-23): Este coverage (92%) se refiere EXCLUSIVAMENTE a los
      scripts de migración, rollback y validación de datos (Epic EMR-001).

      NO representa el coverage de las funcionalidades migradas (auth, gamificación, etc.).
      Para coverage real de funcionalidad, ver archivos TRACEABILITY de épicas funcionales:
        - EAI-001 (Auth): 18% overall
        - EAI-002 (Actividades): 20% overall
        - EAI-003 (Gamificación): 25% overall
        - EAI-004, EAI-005: <15% overall

      Este archivo documenta UNA migración técnica exitosa con zero downtime,
      pero NO incrementa el coverage de tests funcionales del sistema.

# ============================================================================
# MÉTRICAS Y RESULTADO
# ============================================================================

metrics:
  effort:
    estimated_sp: 80
    actual_sp: 85
    variance: +6%

  budget:
    estimated: 50000
    actual: 52500
    variance: +5%

  time:
    estimated_days: 20
    actual_days: 22
    variance: +10%

  quality:
    data_loss: 0%
    downtime: 0 minutes
    bugs_found: 8
    bugs_fixed: 8
    performance_improvement: 65%

  deliverables:
    schemas: 13
    tables: 62
    indexes: 74
    functions: 61
    triggers: 39
    views: 16
    enums: 10
    rls_policies: 24
    migrations: 22
    documentation_pages: 85+
    note: "Actualizado 2025-11-08 con números reales"

status:
  phase_status: completed
  completion_date: "2024-09-30"
  accepted_by: Tech Lead, Database Team
  deployed_to: production
  zero_downtime: true
  updated: "2025-11-08"
  notes: |
    Migración completada exitosamente con zero downtime.
    Performance mejorado 65% en queries críticas.
    Todas las validaciones de integridad pasaron.
    RLS implementado correctamente en 24+ tablas.
    Sistema más escalable y mantenible.

    ACTUALIZACIÓN 2025-11-08: Números corregidos con implementación real:
    - Tablas: 62 (no 89) - Fase 3 extensiones no completadas totalmente
    - Índices: 74 (no 127) - Optimizaciones planificadas pendientes
    - Funciones: 61 (MEJOR: era 28) - Más lógica en BD de lo planificado
    - Triggers: 39 (MEJOR: era 18) - Más automatización implementada
    - RLS: 24 (no 45) - Cobertura parcial de seguridad

    La migración fue exitosa pero con alcance ajustado a Fases 1-2 completadas.

# ============================================================================
# DEPENDENCIAS
# ============================================================================

dependencies:
  required_by_epics:
    - EXT-001  # Portal maestros requiere schemas optimizados
    - EXT-002  # Admin extendido usa nuevas views
    - EXT-003  # Notificaciones usa audit_logging
    - ALL      # Todas las extensiones se benefician de mejor performance

  depends_on_epics:
    - EAI-001  # Requiere auth base
    - EAI-002  # Requiere contenido educativo base
    - EAI-003  # Requiere gamificación base
    - EAI-004  # Requiere analytics base
    - EAI-005  # Requiere admin base

# ============================================================================
# NOTAS ADICIONALES
# ============================================================================

notes:
  - Zero downtime achieved using blue-green deployment strategy
  - All 15 migrations are reversible
  - Performance improved 65% on average
  - RLS provides enterprise-level security
  - Modular schemas enable independent scaling
  - Documentation exhaustive (6 technical docs)

lessons_learned:
  - Blue-green deployment crucial for zero downtime
  - Extensive testing before production prevents issues
  - Modular schemas significantly improve maintainability
  - Strategic indexes provide massive performance gains
  - RLS should be implemented early, not retrofitted
  - Comprehensive documentation saves debugging time

# ============================================================================
# INVENTARIO COMPLETO
# ============================================================================

complete_inventory:
  reference: DATABASE_INVENTORY.yml (docs/90-transversal/inventarios/)
  total_objects: 289
  breakdown:
    tables: 62
    indexes: 74
    functions: 61
    triggers: 39
    views: 12
    materialized_views: 4
    enums: 10
    rls_policies: 24
    other: 3
  note: "ACTUALIZADO 2025-11-08 con inventario real"

# ============================================================================
# CHANGELOG
# ============================================================================

changelog:
  - date: "2024-09-01"
    version: "0.1"
    author: "Database Team"
    changes: "Started migration planning"

  - date: "2024-09-08"
    version: "0.3"
    author: "Database Team"
    changes: "Executed first 5 migrations (schemas + tables)"

  - date: "2024-09-15"
    version: "0.6"
    author: "Database Team"
    changes: "Data migration completed, indexes created"

  - date: "2024-09-22"
    version: "0.8"
    author: "Database Team"
    changes: "RLS policies implemented, functions created"

  - date: "2024-09-30"
    version: "1.0"
    author: "Database Team"
    changes: "Migration completed, production deployment with zero downtime"