visa维护用户的安全上下文，即登录数据(用来向IBM Cognos 8验证身份的数据)和用户的身份(用户所属的组和角色)。

A Visa maintains the user's security context, that is the logon data (whatever was used to authenticate to IBM Cognos 8), and his identity (the groups and roles he's a member of).

youdao

TinyLogin ：TinyLogin 是一套 tiny UNIX 实用程序，它用于登录嵌入式系统、接受其验证身份、为其修改密码，并 能维护其用户和用户组。

TinyLogin: TinyLogin is a suite of tiny UNIX utilities for handling logging into, being authenticated by, changing one's password for, and otherwise maintaining users and groups on an embedded system.

youdao