Within a process, threads which need to access the Content Manager server can obtain connected and logged-on datastore objects from a pool, returning them to the pool when they are done.
在一个进程中，需要访问Content Manager服务器的线程可以从池中获得一个已经连接并登录的数据存储对象，并在使用完这个对象时将它返回到池中。
Simulated data access objects essentially simulate a back-end datastore.
模拟数据访问对象实际上模拟后端数据存储。
In this article, I demonstrated various methods to create objects from the data in an XML document and persist them on the DataStore available to GAE developers.
本文演示了从一个XML文档中的数据创建对象，并将它们持久化到GAE开发人员可用的DataStore上的各种方法。
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