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可行性研究...................................................................................................................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...........................................................................................................142.5.2软件环境...........................................................................................................143系统设计...........................................................................................................................一五3.1系统结构设计.........................................................................................................一五3.1.1软件设计的原则...........................................................................................一五3.1.2系统层次结构...................................................................................................163.2数据库设计.................................................................................................................173.2.1数据库概念设计...............................................................................................173.2.2数据库逻辑设计...............................................................................................183.3用户界面设计......................................................................................................213.3.1人机界面设计原则...........................................................................................213.3.2主界面设计...................................................................
