# Database Patterns Modules

**Categoria:** Patrones de Base de Datos
**Actualizado:** 2026-01-04

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## Modulos Disponibles

| ID | Nombre | Version | Estado | Proyectos |
|----|--------|---------|--------|-----------|
| audit-trail | Audit Trail (who/when) | 1.5.0 | production | erp-core |
| soft-delete | Soft Delete Pattern | 1.2.0 | production | all |
| multi-tenant-schema | Multi-tenant Schema | 2.0.0 | production | erp-core |
| versioning | Row Versioning | 1.0.0 | production | erp-core |
| full-text-search | Full Text Search | 1.0.0 | beta | gamilit |

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## PostgreSQL Patterns

### Audit Trail
```sql
CREATE TABLE audit_log (
  id UUID PRIMARY KEY,
  table_name TEXT NOT NULL,
  record_id UUID NOT NULL,
  action TEXT NOT NULL, -- INSERT, UPDATE, DELETE
  old_data JSONB,
  new_data JSONB,
  user_id UUID,
  created_at TIMESTAMPTZ DEFAULT NOW()
);
```

### Soft Delete
```sql
ALTER TABLE {table} ADD COLUMN deleted_at TIMESTAMPTZ;
CREATE INDEX idx_{table}_not_deleted ON {table} (id) WHERE deleted_at IS NULL;
```

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## Guia de Seleccion

| Si necesitas... | Usar modulo |
|-----------------|-------------|
| Tracking de cambios | audit-trail |
| No borrar datos | soft-delete |
| SaaS multi-tenant | multi-tenant-schema |
| Historial de versiones | versioning |
| Busqueda en texto | full-text-search |