Room Database

Local database with Room: Entity, DAO, Database, Relations, Migrations, TypeConverters, LiveData and Flow

25 面接問題·

Mid-Level

What is Room in Android?

回答

Room is a persistence library that provides an abstraction layer over SQLite. It simplifies database access with annotations and generates code to avoid boilerplate. Room is part of Android Jetpack.

What are the 3 main components of Room?

回答

The 3 main components of Room are: 1) Entity (represents a table), 2) DAO (Data Access Object, contains queries), 3) Database (abstract class containing database configuration and DAOs).

What is the @Entity annotation used for in Room?

回答

@Entity marks a class as a database table. Each field in the class becomes a column. By default, the table name is the class name, but it can be customized with tableName.

Room Database

What is Room in Android?

回答

What are the 3 main components of Room?

回答

What is the @Entity annotation used for in Room?

回答

How to define a primary key in a Room Entity?

What is the @ColumnInfo annotation used for?

その他のAndroid面接トピック

Android Fundamentals

Android UI and Resources

Android Lifecycle

Android Navigation

Android Data Management

Android Networking

Android Testing

Android Gradle

Kotlin Language Essentials for Android

Background Work

Jetpack Compose

Permissions and Device Features

Firebase for Android

Android MVVM Architecture

Advanced Android Networking

Kotlin Collections and Operators

Kotlin Coroutines and Flow

Android Dependency Injection

Android MVI Architecture

Android Clean Architecture

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Android Performance and Monitoring

Android Security and Privacy

Android CI/CD and Release

Android UX and Form Factors

Android Testing Advanced

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