This reduces the total programming effort by reducing the amount of effort spent in writing database control logic, while ensuring the consistency and validity of the data.
这不仅省去了编写数据库控制逻辑的工作量，同时也保证了数据的一致性与正确性，从而降低了总的编程量。
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This logicin the session bean will force the clients to always do the right thing, ensuring consistency in the application and preventing code duplication at the client side.