How to copy data from the database (from the old to the new one) when updating the application?

Question

Android

Hello, I've run into some confusion. I need to copy data from the old database, in the installed application, to the new one (when updating the application or reinstalling it), I googled the methods that need to be inherited from the SQLiteOpenHelper class, but I didn’t know how and where they get information about the old database.
How can I transfer data from the old database to the new one if I, for example, reinstall the application? I just want to start getting into it, so don't throw out some super duper solutions for seniors. Thank you understanding people.

Answer 1

When you update the application, all data is saved
. And when you reinstall it, the deletion occurs first. And nothing remains. Option for reinstallation - store data not locally, but on the server