资格认证程序参考文档 Qualification Program Reference Document
凡是使用率高的好程序都需要好的参考文档，BASH也不例外。
Any good heavily-used program needs good reference documentation, and BASH is no exception.
而仅仅根据参考文档来比较当前程序的人也是检查人员，不是测试人员。
A person who does nothing but to compare a program against some reference is a checker, not a tester.
参考jpa文档，选择适用于您的本应用程序的级联策略。
Take a look at some of the JPA documentation to pick the right cascade policy for your application.
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