@Override
  public boolean addTransFare(TransFarePO po) throws RemoteException {
    // TODO Auto-generated method stub
    String driverID = po.getDriverID();
    String orderID = po.getOrderID();
    double money = po.getFare();
    builder = new SQLBuilder();
    builder.InsertInto(tableName, money_col, orderID_col, driverID_col)
        .Values(money, orderID, driverID);

    try {
      builder.excute();
      return true;
    } catch (Exception e) {
      e.printStackTrace();
      return false;
    }
  }