Welcome to the Room Database Quiz! This quiz will test your knowledge of implementing SQLite-based database storage using the Room persistence library in Android applications. The questions cover various aspects, including setting up a Room database, working with entities, DAOs, repositories, and integrating these with a ViewModel and Jetpack Compose UI. Whether you’re revisiting concepts or testing your understanding, this quiz is designed to help reinforce your learning and ensure you’re ready to build robust data-driven Android apps.
1.
What does the '@Insert' annotation in a DAO do?
2.
How is a Room database instance created in the RoomDemo project?
3.
What does the 'fallbackToDestructiveMigration()' method do in Room?
4.
What is the purpose of using 'MutableLiveData' in a repository?
5.
Why is 'LiveData' used in Room database queries?
6.
Which function is used to prevent blocking the main thread during database operations?
7.
What is the purpose of the 'MainViewModelFactory' class?
8.
What should be done to use the Database Inspector with a running Room database app?
9.
What is the role of a Repository class when working with Room databases?
10.
Why might 'autoGenerate = true' be used with the '@PrimaryKey' annotation?
11.
Why is it important to avoid performing database operations on the main thread?
12.
Which library is required for handling asynchronous Room database queries?
13.
Which annotation is used to define a class as an entity in Room?
14.
Which component is typically responsible for managing the UI state in the Room-based project?
15.
Which component in Room is responsible for defining SQL queries?
16.
How can changes to database records be automatically reflected in the UI?