Save data in a local database using Room | Android Developers

Modern Android Quickly bring your app to life with less code, using a modern declarative approach to UI, and the simplicity of Kotlin.

[DecoyMaker]

ORM

[gfx]

Google公式のAndroid ORMだと…！？

[teematsu]

“By implementing the BaseColumns interface, your inner class can inherit a primary key field called _ID that some Android classes such as cursor adaptors will expect it to have. It's not required, but this can help your database work harmoniously with the Android framework.”