entities query 实体查询
Query entities, association, and data binding with controls.
查询实体、关联和与控件的数据绑定。
A query will typically consist of one or more measures, which are measurement entities from the fact tables that are of interest to the user.
一个查询通常由一个或多个度量组成，这些度量是来自用户感兴趣的事实表的度量实体。
A find or query operation can be decorated to apply a fetch plan to customize the set of entities to fetch from the database.
查找或查询操作还可以通过修饰后应用一个查询计划来自定义从数据库查询得到的实体集。
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