用delphi写的课堂作业，一个简单的学生上课考勤系统，数据库路径为D:\zhang\data\zl.mdb-Delphi written with classroom work, students a simple attendance systems, database path for the D: zhangdatazl.mdb

各种基本数据的录入，修改，删除，查询，统计计算。对于系统的简单操作，如：改 变用户的密码、增加和删除用户、设置数据文件的路径等等。-All kinds of basic data entry, edit, and delete, inquiry, statistics calculation. For the system is easy to operate, such as: change the password of user, add and remove users set d