In regard to data models, a query capacity is defined for assessment of query models. The powerset based query model is examined according to the capacity.
分析了一般数据库的查询模型，提出基于集合构造的幂集查询模型，基于数据模型的特点定义了能评价查询模型强弱的查询能力，据此讨论了幂集查询模型的能力及其特点。
参考来源 - 基于幂集的查询模型及其查询能力·2,447,543篇论文数据，部分数据来源于NoteExpress
We would like to extend and improve the query model.
我们想扩展、改进查询模型。
Even as we reach version 1.0, olap4j's query model is a work in progress.
虽然我们已经到了1.0版本，但olap4j的查询模型仍然在继续进行。
The downside is that in some cases data is duplicated and the query model arguably is made more complex.
其缺点是在某些情况下，数据要冗余，查询模型也自然更复杂一些。
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