When building a back-end program, it is best to first retrieve the PIDs or only the attributes of an item.

当构建一个后端程序时，最好是首先检索PID或只是检索条目的属性。

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If you are building a back-end program that would augment parts belonging to an item, first retrieve the PIDs of the items that satisfy the query.

如果您正在构建后端程序，该程序需要增加属于条目的部分，那么首先请检索满足查询的条目的PID。

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Dynamic program data from back-end business logic can also be placed at the specified location in the HTML.

也可以将后端业务逻辑中的动态程序数据置于HTML中的指定位置上。

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