The shopping mall is a sales website that can meet the needs of consumers for convenience, speed, and discounts. This system has initially drawn up the following two modules: administrators and ordinary users. The seller module includes the following functions:
seller registration: this module is used to register if there are sellers who put on the shelves, and can add, delete, view and modify their own account passwords. 
Commodity information management: sellers add commodities and put them on or off the shelves.
Order management: ship and return user orders.
(1) The administrator module includes the following functions:
Commodity category management: This module divides commodity information into two categories (namely, large categories and small categories), and realizes setting the two categories of commodities as level menus; Add and delete.
Commodity information management: This module realizes the management of commodity information, including functions such as viewing commodity information by page, reviewing commodity information, modifying commodity information, and deleting commodity information.
Member information management: Realize checking basic member information and setting permissions for some members, but the password administrator of member users has no right to view.
Order information management: realize the functions of order acceptance and view order details, but order information cannot be modified.
Modify personal password: Change the password of the logged-in administrator.
Log out of the system: the background of the website plays a vital role in the normal operation of the entire website. After the administrator completes the maintenance of the website, he must exit the background page of the system and return to the main page of the system.
(2) The general user module includes the following functions:
Main page of the system: Realize displaying new products, special offers, latest announcements, etc. launched by some malls in the first time, and can search for designated products, product classification queries, etc.
Member Registration: This module is used for user registration if there are purchased products, and can add, delete, view and modify your own account password.
User login and purchase products: This module is used for current user login. After login, you can purchase products. If there are too many products, you can search for the products you want and add the selected products to the shopping cart. Good items are deleted and modified.
Review registered users: This module is to review registered users and determine whether they can be registered successfully, but it can also delete users after successful registration. 
Shopping cart management: This module is to put the items selected by the user into the shopping cart and manage them.
(3)
