Having generated the normalized model, you need to de-normalize it to suit your business needs.
在生成了标准化模型后，您需要进行非标准化，使模型适应您的业务需求。
However, when high performance is required, materialized views are created to de-normalize the data.
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。
The difference is, when dealing with the App Engine datastore, you must de-normalize early and often.
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。
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