# @zexus/db Package Specification

**Status**: Planned (Phase 3)
**Dependencies**: Database Drivers (Phase 1), DATABASE Keywords (Phase 2)
**Priority**: High

## Overview

Complete database framework combining:
- Database drivers from Phase 1
- Native DATABASE keywords from Phase 2
- ORM and query builder

## Installation

```bash
zpm install @zexus/db
```

## Features

### Database Drivers
- PostgreSQL
- MySQL
- MongoDB
- SQLite
- Redis

### ORM
- Model definitions
- Relationships (has_many, belongs_to)
- Validations
- Callbacks
- Scopes

### Query Builder
- Fluent API
- Type-safe queries
- Joins and subqueries
- Aggregations

### Migrations
- Schema management
- Version control
- Rollback support

### Connection Pooling
- Automatic pool management
- Load balancing
- Failover support

## Quick Start

```zexus
use {Database, Model} from "@zexus/db"

let db = Database.connect("postgresql://localhost/myapp")

# Define model
data User extends Model {
    table: "users"
    
    id: integer
    name: string
    email: string
}

# Create
let user = User.create({name: "Alice", email: "alice@example.com"})

# Query
let users = User.where({active: true}).limit(10)

# Update
user.name = "Alice Smith"
user.save()

# Delete
user.delete()
```

---

**Status**: Planned
**Last Updated**: 2025-12-29
