1.　　学生管理系统

要求：

（1）　　用户访问时首先需要完成注册的功能，在数据库中存在的用户才可访问本系统。

（2）　　如访问的用户是管理员时，其具有添加学生、修改学生信息、删除学生信息、查询全部学生信息的功能。

（3）如访问的用户是普通学生则只能查询和修改自身的信息。

-1 student management system

Requirements:

(1) user access, you first need to complete the registration function, users can access the system database.

(2) such as access to the user is the administrator, with add students to modify the student information, delete student information, check the information of all students function.

Such as user access is an average

（3）student can only query and modify their own information.