Marks the class as a Data Access Object.

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 androidx.room3.RoomDatabase that is annotated with Database.

An abstract @Dao class can optionally have a constructor that takes a Database as its only parameter:

@Dao
abstract class SongDao(private val database: RoomDatabase) {
    // ...
}

It is recommended to have multiple Dao classes in your codebase depending on the tables they access.

See also
Query
Insert
Delete
Update
Upsert
RawQuery

Summary

Public constructors
Dao()
Cmn

Public constructors

Dao

Cmn 
Dao()