用delphi做的一个简单的学生管理系统，可以支持学生登录和老师登录两种方式，学生登录只能查询信息，老师登录可以对信息进行修改，删除，添加。-Delphi to do a simple student management system, can support the student login and teachers to log on in two ways, the student login can only query information, teacher login info