However, the data in bottom databases is changing continuously. it is necessary to timely maintain for them in order to make the pre-aggregated data in distributed data warehouses synchronously reflecting the changes of data resources.
然而,底层数据库中的数据是不断变化的,为使分布式数据仓库中的预聚集数据能够同步反映数据源的变化,必须对其进行及时维护。
参考来源 - 分布式数据仓库中预聚集数据的一致性维护策略研究·2,447,543篇论文数据，部分数据来源于NoteExpress
This pre-stored, aggregated data allowed agency employees to see results very quickly at the level they needed.
这个预先存储的汇总数据允许机构员工以他们需要的级别快速查看结果。
The consolidated business data can be pre-aggregated along with the hierarchies in all dimensions to reduce the runtime calculation for building the OLAP reports.
合并的业务数据可以沿着所有维度中的层次结构预先进行聚合，从而减少构建OLAP报告所需的运行时计算。
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