/** Drops underlying database table using DAOs. */
public static void dropAllTables(SQLiteDatabase db, boolean ifExists) {
ConversationDao.dropTable(db, ifExists);
ChatMessageDao.dropTable(db, ifExists);
UserDao.dropTable(db, ifExists);
}
/** Creates underlying database table using DAOs. */
public static void createAllTables(SQLiteDatabase db, boolean ifNotExists) {
ConversationDao.createTable(db, ifNotExists);
ChatMessageDao.createTable(db, ifNotExists);
UserDao.createTable(db, ifNotExists);
}