说明：  图书馆管理系统可管理图书信息和读者信息。图书管理员根据不同的身份，对应不同的操作权限。超级管理员拥有系统维护、数据库维护的权限；一般管理员负责不同的日常工作模块；馆长具有一切权限。
(Library management system to manage information and readers of books of information. Librarians according to different identity, corresponding to different operational competence. Super Administrators have system maintenance, database maintenance of the authority general manager responsible for the daily work of different modules curators have all permissions.)