users包含用户和口令信息。
应用程序需要一个安全性部署计划，指定从哪个源获得认证用户所需要的用户名和口令信息。
Your application needs a security deployment plan that specifies what the source is for obtaining username and password information for authenticating users.
这不仅允许保存用户名和口令信息，还允许保存其他关于用户的个人和标识信息，例如电子邮件地址。
This allows you to not only store the username and password information, but also other personal and identifying information about a user, such as an E-mail address.
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