QUESTION: 53 Topic: KOTLIN only

What is the incorrect statement about Data Access Object (androidx.room.Dao)?

Data Access Objects are the main classes where you define your database interactions. They can include a variety of query methods.
The class marked with @Dao should either be an interface or an abstract class. At compile time, Room will generate an implementation of this class when it is referenced by a Database.
An abstract @Dao class can optionally have a constructor that takes a Database as its only parameter.
It is recommended to have only one Dao class in your codebase for all tables.

Answer(s): D

QUESTION: 54 Topic: KOTLIN only

By adding a RoomDatabase.Callback to the room database builder RoomDatabase.Builder (method
addCallback(RoomDatabase.Callback callback)), we can: (Choose two.)

set the database factory
handle database first time creation
handle database opening
disable the main thread query check for Room

Answer(s): B,C

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QUESTION: 55 Topic: KOTLIN only

By executing an allowMainThreadQueries() method to the room database builder
RoomDatabase.Builder, we can:

set the database factory
handle database first time creation
handle database opening
disable the main thread query check for Room

Answer(s): D

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QUESTION: 56 Topic: KOTLIN only

Room can export your database's schema information into a JSON file at compile time. What annotation processor property you should set in your app/build.gradle file to export the schema?

room.expandProjection
room.incremental
room.schemaLocation

Answer(s): C

Explanation:

android {
...
defaultConfig {
...
javaCompileOptions {
annotationProcessorOptions {
arguments += ["room.schemaLocation":
"$projectDir/schemas".toString()]
}
}
}
}

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Free Associate Android Developer Exam Braindumps (page: 15)

QUESTION: 53 Topic: KOTLIN only

QUESTION: 54 Topic: KOTLIN only

QUESTION: 55 Topic: KOTLIN only

QUESTION: 56 Topic: KOTLIN only

Explanation: