def METHOD_NAME(self, timestamp):
    """ update (last) sync timestamp
    """
    if 'sync_timestamp' not in self._tables:
        self._db_cursor.execute('create table sync_timestamp(mtime timestamp)')
        self._db_cursor.execute('insert into sync_timestamp(mtime) values(0)')
        self._db_connection.commit()
        self._update_known_tables()
    # update last sync timestamp, if this date > timestamp
    self._db_cursor.execute('update sync_timestamp set mtime = :mtime where mtime < :mtime', {'mtime': timestamp})
    self._db_connection.commit()