本系统是图书管理系统，其具有登录管理、图书查询、借出归还书籍、入库删除书籍等功能。那么从这些基本功能出发，本系统分成四大模块：系统管理模块、书籍数据管理模块、读者数据管理模块、借还系统模块。-This system is a library management system, which has a login management, book search, return books borrowed, warehousing delete books and other functions. So starting　these basic functions, the system is divided into four modules: system management module, data management module books, the reader data management module, circulation system module.