.................................................................................................................................6第三章需求分析...........................................................................................................................8第四章系统分析.............................................................................................................................94.1系统功能划分....................................................................................................................94.2网站架构..........................................................................................................................104.3系统功能模块设计..........................................................................................................10第五章数据库设计.......................................................................................................................115.1数据库需求分析..............................................................................................................115.2数据库概念结构设计......................................................................................................115.3数据库表结构设计.......................................................................................................11第六章详细设计.........................................................................................................................156.1登入界面..........................................................................................................................156.2学生管理界面.................................................................................................................176.2.1主界面.................................................................................................................176.2.2密码修改界面.....................................................................................................186.2.3下载中心.............................................................................................................206.3教师管理界面.................................................................................................................206.3.1