Which Android components are applicable in the data layer when implementing Clean Architecture?

In the data layer when implementing Clean Architecture on Android, the following components are typically used:

• Room — a library for working with local SQLite database, providing convenient data access via DAO (Data Access Object).
• Retrofit / OkHttp — for network requests and fetching data from remote sources.
• Repository — a pattern that encapsulates data access logic, combining local and remote sources.
• Data Source — abstractions for different data sources (local, remote) implementing interfaces used by repositories.

Thus, the data layer is responsible for data retrieval, storage, and provision, hiding implementation details from the domain and presentation layers.