# Database Management Configuration Specification

**Version**: v1.1.9 | **Status**: Active | **Last Updated**: March 2026

## Overview

Database management, migration, backup, and administration. Supports PostgreSQL, MySQL, and SQLite with connection pooling, schema generation, and replication management. This specification documents the configuration schema and constraints.

## Configuration Schema

| Key | Type | Required | Default | Description |
|-----|------|----------|---------|-------------|
| `DB_HOST` | string | No | `localhost` | Database server hostname |
| `DB_PORT` | string | No | `5432` | Database server port |
| `DB_USER` | string | No | `postgres` | Database username |

## Environment Variables

```bash
# Optional (defaults shown)
export DB_HOST="localhost"    # Database server hostname
export DB_PORT="5432"    # Database server port
export DB_USER="postgres"    # Database username
```

## Design Principles

- **Centralized Config**: All settings accessible via config_management module
- **Env-First**: Environment variables take precedence over config file values
- **Explicit Defaults**: All optional settings have documented defaults
- **Zero-Mock**: No placeholder or fake configuration values in production

## Constraints

- All configuration options have sensible defaults
- Configuration is validated on first use; invalid values raise explicit errors
- No silent fallback to placeholder values

## Dependencies

**Depends on**: `config_management`, `environment_setup`

## Navigation

- [README.md](README.md) | [AGENTS.md](AGENTS.md) | [Source Module](../../src/codomyrmex/database_management/SPEC.md)
