Similarly, mashups used in an enterprise are often associated with data aggregation of both enterprise data and data from public sources.
类似地，在企业中使用的混搭应用程序的数据通常聚合了企业的数据和公共数据。
As is the case with other simple aggregation supporting discovery mechanisms, there is a small cost associated with creating and maintaining the aggregations.
同其它支持发现机制的简单聚合一样，创建及维护该聚合会带来少量成本开销。
The benefits provided by the aggregation do come at a price; there is additional overhead associated with creating and maintaining the aggregating documents.
聚合所带来的收益其实付出了很高的代价；创建和维护聚合的文档带来了额外的开销。
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