泛单点登录（SSO)系统需求分析说明书目录1 引言...............................................................................................................................................21 。 1 编写目的 ......................................................................................................................... 2 1.2 范围 .................................................................................................................................... 2 1 。 3 背景 ................................................................................................................................. 2 1 。 4 定义 ................................................................................................................................. 2 1.5 参考资料 ............................................................................................................................ 3 2 项目概述 ....................................................................................................................................... 3 2.1 目标 .................................................................................................................................... 3 2 。 2 产品功能 ......................................................................................................................... 3 2 。 3 用户特点 ......................................................................................................................... 4 2.4 运行环境 ............................................................................................................................ 4 2.5 条件和限制 ........................................................................................................................ 4 3 功能需求 ....................................................................................................................................... 5 3.1 功能划分 ..........................
