Room also provides compile-time checks of SQLite statements.Īn abstraction layer is a set of functions that hide the underlying implementation/complexity. Instead of using SQLite directly, Room simplifies the chores of database setup, configuration, and interactions with the app. SQLite uses a specialized language (SQL) to perform database operations. Room is an abstraction layer on top of a SQLite database. Room is a persistence library that's part of Android Jetpack. For such use cases, you use a database to store this persistent data. For example, the app might store a playlist of songs, items on a to-do list, records of expenses and income, a catalog of constellations, or a history of personal data. Import static .Most production-quality apps have data that the app needs to persist. Also if you have a result set of only one row and you need to retrieve values of certain columns, you can do it like this: There are also some useful methods to check the position of a cursor: boolean isAfterLast(), isBeforeFirst, isFirst, isLast and isNull(columnIndex).
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