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Working with Room Database Entities

Explore how to define entities using the Room persistence library in Android development. Learn to set primary keys, composite keys, and table indexes, and understand how to exclude fields from persistence. This lesson helps you create and manage your app's database schemas more efficiently without direct SQL.

Introduction

The Room persistence library provides the Entity annotation, which can represent the schema of an SQLite table. The Entity class defines the table schema, and each instance of the class represents a row in the table. In addition to the Entity annotation, Room provides annotations for table columns and their primary keys.

Let’s get started and learn how to define entities in our application.

Defining a User table

The easiest way to learn about entities is to ...