Issue #2848815 by mondrake, voleger, gaurav.kapoor, jeetendrakumar, Sharique, vidhatanand, techtud, cilefen, andypost:  Replace all calls to db_next_id, which is deprecated

Issue #2848817 by voleger, andypost, hgunicamp, JacobSanford, techtud, alexpott, vidhatanand, Sharique, JayKandari, kiamlaluno, cilefen, borisson_: Replace all calls to db_table_exists, which is deprecated

Issue #2848812 by harsha012, gaurav.kapoor, Yogesh Pawar, Sharique, techtud, JayKandari, alexpott: Replace all calls to db_set_active, which is deprecated