package Ġcom . example . android . android arch kotlin . db Ċ Ċ import Ġandroidx . room . Database Ċ import Ġandroidx . room . Room Database Ċ import Ġcom . example . android . android arch kotlin . db . dao . Main Dao Ċ import Ġcom . example . android . android arch kotlin . db . model . Main Entity Ċ Ċ @ Database ( entities Ġ= Ġ[ Main Entity :: class ], Ġversion Ġ= Ġ 1 , Ġexport Schema Ġ= Ġfalse ) Ċ abstract Ġclass ĠDatabase Ġ: ĠRoom Database () Ġ{ ĊĠĠĠ Ġabstract Ġfun Ġmain Dao (): ĠMain Dao Ċ }