Duplicating of data access logic between multiple services.
在多个服务间复制数据存取逻辑。
You can also test the data access logic without concern for the GUI.
我们还可以测试数据访问逻辑而无需关心gui。
Thus, in addition to encapsulating data, it encapsulates data access logic.
因此，除了封装数据，也封装了数据访问逻辑。
The challenge is testing this business logic without testing the data access logic.
难点是对业务逻辑进行测试而无需涉及数据访问逻辑。
The Resource access layer, which contains the logic necessary to access data.
资源访问层，包含了访问数据所必需的逻辑。
The Resource access layer, which contains the logic necessary to access data.
资源访问层，包含了访问数据所必需的逻辑。
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