在本文的其余部分中，将讨论总体的概念、类、服务接口和动态行为，然后在下一部分中详细说明实现。

The overall concepts, classes, service interface, and dynamic behaviour will be discussed in the remainder of this article, then move to implementation details in the next.

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填充新缓存导致的启动时间开销(在本文后面讨论)并不显著，因为每个类只需在定义时重新定位到缓存中。

Startup time overhead to populate a new cache (which I discuss later in this article) is not significant, as each class simply needs to be relocated into the cache as it is defined.

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将继承映射到关系数据库中有三种基本解决办法，为更好地理解它们，我将讨论在图1中显示的映射类图表的优缺点。

There are three fundamental solutions for mapping inheritance into a relational database, and to understand them I will discuss the trade-offs of mapping the class diagram presented in Figure 1.

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