这个是对地图对象的提取,存取在数据库中，可以快速的读取！-map of the object extraction, access to the database, you can quickly read!

这是本人C++的课程设计（内附课程设计报告）。题目是图书馆里系统。用的数据库是ACCESS，里面的表都符合3NF。连接数据源方法，请看里面的课程设计报告。-This is my C++, curriculum design (with curriculum design report). Topic library system. Database is used by ACCESS, inside the table are in line with 3NF. Connect the data