# Database & SQL Skill

## Installed Tools
- PostgreSQL (docker)
- MongoDB (docker)

## Docker Compose for Databases

### PostgreSQL
```yaml
services:
  postgres:
    image: postgres:16-alpine
    environment:
      POSTGRES_USER: user
      POSTGRES_PASSWORD: password
      POSTGRES_DB: mydb
    volumes:
      - postgres_data:/var/lib/postgresql/data
    ports:
      - "5432:5432"
```

### MongoDB
```yaml
services:
  mongodb:
    image: mongo:7
    environment:
      MONGO_INITDB_ROOT_USERNAME: user
      MONGO_INITDB_ROOT_PASSWORD: password
    volumes:
      - mongo_data:/data/db
    ports:
      - "27017:27017"
```

### PostgreSQL + pgAdmin
```yaml
services:
  postgres:
    image: postgres:16-alpine
    environment:
      POSTGRES_USER: admin
      POSTGRES_PASSWORD: secret
      POSTGRES_DB: mydb
    ports:
      - "5432:5432"

  pgadmin:
    image: dpage/pgadmin4
    environment:
      PGADMIN_DEFAULT_EMAIL: admin@test.com
      PGADMIN_DEFAULT_PASSWORD: admin
    ports:
      - "8080:80"
```

## Common Commands
```bash
# PostgreSQL
docker exec -it container psql -U user -d mydb

# MongoDB
docker exec -it container mongosh -u user -p password
```

## GUI Tools
- DBeaver (multi-database)
- pgAdmin (PostgreSQL)
- MongoDB Compass (MongoDB)