一、引言.................................................................................................................................21.1编写目的.............................................................................................................................21.2引用文档.....................................................................................................................................21.3系统概述.............................................................................................................................21.4文档概述.............................................................................................................................2二、项目概述.................................................................................................................................22.1背景和目标.........................................................................................................................22.2用户的特点.........................................................................................................................32.3假定和约束.........................................................................................................................4三、需求规定...................................................................................................................................43.1前台功能需求.....................................................................................................................73.1.5信息反馈模块..........................................................................................................83.2后台功能需求.....................................................................................................................83.2.1用户管理模块..........................................................................................................83.2.2订单管理模块..........................................................................................................83.2.3商品管理模块..........................................................................................................93.2.4信息反馈模块..........................................................................................................93.2.5消息发布模块..........................................................................................................93.3性能需求.............................................................................................................................93.3.1精度..........................................................................................................................93.3.2时间特性要求..........................................................................................................93.3.3灵活性....................................................................................................................103.4输入输出要求...................................................................................................................103.5数据管理能力要求...........................................................................................................103.6故障处理要求...................................................................................................................103.7设计约束.............
