@Override
    public Persistable getLatestUpdate(String sessionID, String typeID, String workerID) {
        String sql = "SELECT ObjectBytes FROM " + TABLE_NAME_UPDATES + " WHERE SessionID = '" + sessionID
                        + "' AND TypeID = '" + typeID + "' AND WorkerID = '" + workerID
                        + "' ORDER BY Timestamp DESC LIMIT 1;";