Difference between getWritableDatabase() and getReadableDatabase()?

Question

I use reading and writing to the database without any problems . But I can not find out the difference. I searched on Internet but it \'s not quite clear. Can anyone tell me

Answer 1

Taken from my deleted answer here (this question is a duplicate of that one).

In normal situations, getReadableDatabase() will return the same writable database returned by getWritableDatabase().

However, should it not be possible to return a writable database, getWritableDatabase() will fail, whereas getReadableDatabase() will attempt to return a READ_ONLY database.