We've seen how the EJB extensions file defines the relationship roles, and how these roles may map to attributes in the EJB DD.

我们已经知道EJB扩展文件如何定义关系角色以及这些角色可能如何映射到EJB DD中的属性。

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To understand how the extensions file works, let's first present part of the standard EJB 1.1 DD for our example (some parts have been removed for clarity — they are described below).

要理解扩展文件的工作原理，首先让我们介绍一下用于我们示例的部分标准e JB 1.1 DD(为清晰起见除去了某些部分？它们将在下面描述)。

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After the two commands, the file state.YYYY-MM-DD, such as state.2007-08-05, is created with contents similar to this.

在执行了这两个命令之后，创建了文件state . YYYY - MM - DD，如state . 2007-08-05，其内容与以下所示类似。

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