How many database options are Available to implement Android app (java)

Answer 1

as far as i know sqlite is the only choice, other than creating your own data storage. i havent code an app for years maybe things arr change, idk

you can also use webservice to store the data using other type of database, but it'll require the app to be online.

Answer 2

sqlite have several advantages like lightweight, offline, doesn't require extra interface (means you can handle it from android studio) that's why there's is no substitute available for database in android!