书管理系统需要满足来自三方面的需求，这三个方面分别是图书借阅者、图书馆工作人员和图书馆管理人员。图书借阅者的需求是查询图书馆所存的图书、个人借阅情况及个人信息的修改；图书馆工作人员对图书借阅者的借阅及还书要求进行操作，同时形成借书或还书报表给借阅者查看确认；图书馆管理人员的功能最为复杂，包括对工作人员、图书借阅者、图书进行管理和维护，及系统状态的查看、维护并生成催还图书报表。-Book management system from three aspects need to meet the needs of these three areas are to borrow books, the library staff and library managers. Needs to borrow books from libraries is the query stored in the book, personal loan and personal information changes　library staff to borrow books from the lending and returning books requested operation, at the same time the formation of a library or borrow books to those who read statements to confirm　 Library management staff the most complex functions, including staff, to borrow books, and books in management and maintenance, and system state of the view, to maintain and generate reminder statements circulation.