After annotating the existing infrastructure, you understand each data source separately, but are still unclear about the overlapping and related information from all data sources.
在注释现有的基础结构之后,虽然你了解每一个数据源,但是你并不了解集合在一起的所有数据源。
Consider extracting login and activity times from your instant messaging logs, phone records, or other sources to build additional and overlapping data sets.
考虑从即时消息日志、电话记录或其他来源中提取登录时间及活动时间,构建附加数据集及重叠数据集。
The benefit of asynchrony is achieved by overlapping the execution of the queries at the remote data sources.
异步的优点是通过在远程数据源上重叠执行查询而取得的。
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