What is Room?
While Android SDK provides the APIs for using SQLite databases, they force developers to write a lot of boilerplate code. Room solves this problem by creating the glue code that saves objects to SQLite and reads them into memory. In addition, it performs some compile-time checks to ensure correctness of SQL queries.
In the first screencast of this series, you will learn how to add persistence to your applications using Room, one of the architecture components libraries from Google.
Room Persistence Library