For databases, you will have to manually track the database version and do any update necessary.
With APK, and Now AAB files, I do not think embedded files are updated.
Example, if your app checks during first install if database exist, if not copy. If you update the application, since that database is still there, it wont get updated AUTOMATICALLY. You have to write a code to update the table in that old database, or delete it completely or create new database based on your needs
Check this
https://www.b4x.com/android/forum/threads/updating-an-embedded-db.126077/#content