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The Room persistence library provides an abstraction layer over SQLite to allow for more robust database access while harnessing the full power of SQLite.
The library helps you create a cache of your app's data on a device that's running your app. This cache, which serves as your app's single source of truth, allows users to view a consistent copy of key information within your app, regardless of whether users have an internet connection.
For a guide on applying Room's capabilities to your app's data storage persistence solution, see the Room training guide.
To browse more Room code samples, see the Android Architecture Components samples.