图书管理系统主要包括增加图书、查询图书、删除图书、图书借阅、还书、按照书号进行排序和统计当前借出和借入情况几个模块。

-Library management system including books, book query to delete the books, borrow books, books, in accordance with the ISBN and statistics to sort the current situation of lending and borrowing a few modules.