Assume, though, that instead of a table called users, you have an XML file that contains user information that looks like Listing 3.
但是，假设您拥有的不是一个users表，而是一个XML文件，其中包含了如清单3所示的用户信息。
Consider the following example: an application has a data source that contains user information-first name, last name, email address, and Twitter account.
研究一下下面这个示例：一个应用程序拥有的一个数据源包含一些用户信息—名、姓、邮件地址、以及Twitter帐户。
Users contains user and password information.
users包含用户和口令信息。
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