人机交互是xml编程语言 主要用于网络编程 属于热门语言-xml HCI is the main programming language for Web programming language is popular

一个选课系统的实现，使用XML作为数据库文件，拥有良好的人机交互，登录，注销，选课，退课，登记成绩，查看成绩等功能，账户分为管理员，教师与学生。-An elective system implementation using XML as a database file, has a good human-computer interaction, login, logout, course, retreat classes, registration results, view results