学生选课系统.按用户、学生、教师、管理员四大模块实现功能.除程序代码另附需求分析、web概要设计及测试报告3份内容详尽的文档。-Student course selection system. By users, students, teachers, administrators four modules function. In addition to the code attached needs analysis, web design and test summary report of three copies of detailed documentation.