public Cursor fetchTimetable() { return mDb.query(DATABASE_TABLE_TIMETABLE, new String[] {TIMETABLE_ROWID, TIMETABLE_MODULECODE, TIMETABLE_MODULENAME, TIMETABLE_R
If you're checking against a string value you'll want to wrap the string in quotes like below:
dbHelper.COL_EMAIL +"='"+givenEmail+"'",