What Is the Incorrect Statement About Data Access Object

question 27

Multiple Choice

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

• A) Data Access Objects are the main classes where you define your database interactions. They can include a variety of query methods.
• B) 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. 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.
• C) An abstract @Dao class can optionally have a constructor that takes a Database as its only parameter. An abstract class can optionally have a constructor that takes a Database as its only parameter.
• D) It is recommended to have only one Dao class in your codebase for all tables.

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Definitions:

Confidence Level

The proportion of times that an estimating procedure will be correct if it is used repeatedly.

Standard Deviation

A measure of the amount of variation or dispersion of a set of values, indicating how much the values diverge from the mean.

Confidence Level

The Confidence Level is the percentage that represents how often the true percentage of the population who would pick an answer lies within the confidence interval.

Mean Length

The average measurement from one end to the other of a set of objects or figures.