How to remove the Sqlite database from the application if you decide not to use it?

Question

Android

There is an application already on the market. The base is used for the functionality that I decided to remove.
It is necessary to somehow take some data from it during the update and delete it.
How to do it right?
So far, I've only come up with an option with a flag in SharedPreferences.
- If it is not there, then connect the database,
- check the previous version in it, if it is less than the current one, then take the data, delete the database,
- set the flag.
- Do not connect the base during the next launches.
- When all users switch to the new version, remove the flag check and cut the base completely.

Answer 1

If the standard SQLiteOpenHelper was used, then the task is solved by adding the necessary code to the onUpgrade method

public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
    if (oldVersion == 1 && newVesion == 2) {
        moveOldDataToNewStructure();
        deleteOldDataBase();
    }
}

Answer 2

https://stackoverflow.com/questions/4406067/how-to...
first line of google