dao top-level constant
_Dao
const dao
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 abstract class. At compile time, Floor will generate an implementation of this class when it is referenced by a Database.
It is recommended to have multiple Dao classes in your codebase depending on the tables they touch.
Implementation
const dao = _Dao();