它将数据储存在一个平面地址空间中，这就像一个完全反规范化的数据仓库。
It stores its data in a flat address space, much like a completely de-normalized data warehouse.
区别在于，在处理App Engine数据存储时，您必须尽早且经常进行反规范化。
The difference is, when dealing with the App Engine datastore, you must de-normalize early and often.
不过，当要求实现更高的性能时，则需要创建物化视图来反规范化(de - normalize)数据。
However, when high performance is required, materialized views are created to de-normalize the data.
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