xml文件登录管理员系统→验证当前用户权限→选择“课程基本资料维护” →管理员添加、 删除或修改更新→验证输入或修改的数据→验证通过： 更新数据库， 验证不通过： 给出提示信息要求用户重新输入。-xml file to login to the admin system → verify the current user privileges → → select the course maintenance administrator to add, delete or modify updates → validate input or modify data → verification by: update the database, authentication is not passed: given a message requires the user to re-enter.