However, while the DAL cleanly separates the data access details from the presentation layer, it does not enforce any business rules that may apply.
不过，即使DAL将数据访问的细节从表示层中分离出来了，可它却不能处理任何的业务规则。
However, while the DAL cleanly separates the data access details from the presentation layer, it does not enforce any business rules that may apply.
不过，即使DAL将数据访问的细节从表示层中分离出来了，可它却不能处理任何的业务规则。
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