# Database Models

Database models are provided by the `ccat_ops_db` package.

## Key Models

**Operations**:

- `ExecutedObsUnit` - Actual telescope observations
- `RawDataFile` - Data file metadata
- `RawDataPackage` - File groupings

**Planning**:

- `ObsUnit` - Planned observations
- `ObservingProgram` - Observation programs
- `Source` - Astronomical sources

**Transfer**:

- `DataTransfer` - Transfer operations
- `PhysicalCopy` - Physical storage copies

**Authentication**:

- `User` - System users
- `APIToken` - API tokens
- `Role` - User roles
- `Permission` - Permissions

For complete model definitions, see the [ops-db repository](https://github.com/ccatobs/ops-db).