This quiz is designed to test your knowledge of Room databases in Android development. It covers the key concepts of working with Room, including entities, DAOs, repositories, and the RoomDatabase class, as well as best practices for managing data storage in Android apps. Answer the questions to assess your understanding of how Room simplifies database interactions while adhering to modern Android architecture guidelines.
1.
Which of the following is a convenience annotation in Room?
2.
How can Room handle in-memory databases?
3.
What does the @Ignore annotation do in a Room entity class?
4.
Which component provides the interface to the underlying SQLite database in Room?
5.
What is the main purpose of the Room persistence library?
6.
What is the role of a Data Access Object (DAO) in Room?
7.
Which method is used to delete records from a Room database?
8.
What annotation is used to mark a class as an entity in Room?
9.
What should be done when a Room database schema changes?
10.
What is the main benefit of using Room over plain SQLite in Android?
11.
What annotation is used to automatically generate primary keys in Room?
12.
Which annotation is used for inserting records in Room?
13.
What does the @ColumnInfo annotation do?
14.
What does the fallbackToDestructiveMigration() method do?
15.
How can LiveData be used with DAOs?
16.
What is the purpose of the RoomDatabase class?
17.
What is the purpose of the @ForeignKey annotation in Room?
18.
What is a primary key in the context of Room databases?
19.
Which method is used to get an instance of Room Database?
20.
What happens if you try to run a database operation on the main thread?
21.
Why is it important to use a single Room database instance?
22.
What is the role of a repository in the Room database architecture?
23.
How do you handle large database operations in Room?
24.
What is an entity in the context of Room databases?
