向下钻取数据库事务问题的详细信息。
场景2：向下钻取数据库事务问题的详细信息。
动态过程中，只需从扩展内存中取数据即可。
In dynamic process, only directly getting the data from extend memory is OK.
只需编写少量程序，新数据服务就可以容易地拉取数据。
New data Services make it easy to pull data with very little programming effort.
使用拉取方式，要想达到完整的数据一致性以及很高的网络性能是很困难的。
With the pull approach, achieving total data coherence with high network performance is very difficult.
您可以继续向上或向下钻取以便更好地理解您的业务数据。
You can continue drilling up and down to better understand your business data.
从产生的结果数据集检索（取）数据。
有了多播，每个客户机能拾取单一数据流而节省带宽。
With multicast, a single stream can be picked up by each client, saving bandwidth.
取二个数据，第二个数据正好是第一个数据一分钟后。
Take two readings, the second one exactly one minute after the first one.
当外部代理具有数据时，产生并发出预取指令。
When the external agent has data, it may create and issue a prefetch directive.
当外部代理具有数据时，产生并发出预取指令。
When the external agent has data, it may create and issue a prefetch directive.
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