网上图书销售系统需求分析1 引 言11.1 简介...............................................................................................................................11.2 参考资料.......................................................................................................................12 系统分析.................................................................................................................................22.1 开发背景及意义...........................................................................................................22.2 可行性讨论...................................................................................................................22.3 功能需求.......................................................................................................................42.3.1 用例分析.............................................................................................................42.3.2 概念类描述.........................................................................................................82.3.3 顺序类描述.......................................................................................................102.4 性能需求.................................................................................................................一三2.4.1 响应时间.......................................................................................................一三2.4.2 吞吐量...........................................................................................................一三2.4.3 并发用户数...................................................................................................一三2.4.4 资源利用率.......................................................................................................142.5 环境需求.....................................................................................................................142.5.1 硬件环境.............................
