Library management system 2- demand analysis

Last one , The basic information of the system has been introduced . This article , Start the first step of software engineering - Demand analysis ！

1 Original requirements

The following is the original requirements I received about the system ：

I want to make a library management system , The functions are as follows

（ 1） Administrator management module
The administrator has the right to manage the small program library system ,
But the use of all permissions , Must be authorized by the administrator ,

My analysis ： After entering the home page, the administrator can authorize relevant functions for employees ,
such as ： Book lending management 、 Announcement management 、 Seat management 、 User management .

（ 2） User management module
Manage registered users .

（ 3） Book borrowing management module
It is mainly used to record the borrowing status of books , Administrators can operate books on and off shelves ,

My analysis ： Classify books 、 Add, delete, change, check, etc . Users can view all books through the interface classification , Search for 、 And borrow

（ 4） Seat management module
It is mainly aimed at the inquiry of Library seats , It is convenient for college students to make reservation of Library seats in advance ,

My analysis ： The administrator can add seat information 、 modify 、 Delete operation

（ 5） Announcement management module
Users can view the latest announcements about the library issued by the administrator .

demand , Let's have a look , It looks ordinary , It's not hard . It's true , It doesn't seem difficult . In fact! , I can make this system 10 Sub system , It can also be made 100 Sub system .10 The full name of the sub system is simply added, deleted, modified and checked , This kind of work is of little significance . If you want to make 100 Sub system &#