本文是一篇概述性文章，调查并描述了可用的多租户的类型，并提供了实现用例。
This overview investigates and describes the types of multi-tenancy available and provides implementation use cases.
本文属于概述性的，不过下面的二篇文章将包含许多代码。
This article has been high level, but the next two articles contain a lot of code.
如果你写的是文学方面的文章，别给你的教授交一份故事情节概述；如果你写关于某种理论的文章，别给教授交一份你为了这门课程专门阅读过的某一篇理论性文章的要点。
If you are writing about literature, do not give your professor a plot summary; if you are writing about some kind of theory, do not give the main points of a theoretical essay you read for the class.
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