| Name | Type | Description | Notes |
|---|---|---|---|
| engine | string | Database engine type (MySQL 8.4, Postgres) | [optional] [default to 'mysql'] |
| instance_class | string | RDS instance class | [optional] [default to 'db.t4g.micro'] |
| storage_gb | int | Allocated storage in GiB | [optional] [default to 20] |
| multi_az | bool | Enable Multi-AZ deployment (higher availability and cost) | [optional] [default to false] |