Class Diagram for Online Shopping Cart | UML

Class Diagram for Online Shopping Cart

A UML class diagram is used to represent, explain, and document the parts (classes) of an online shopping cart. It can also be a reference or way to create executable software code.

Class diagrams provide an overview of the shopping cart’s classes, functions, and relationships.

Project Overview

Name:Online Shopping Cart Class Diagram
UML Diagram:Class Diagram
Users:Online Sellers, Admin, and Online Customers.
Tools Used:Any Diagram tools that provide use case diagram symbols.
Online Shopping Cart Class Diagram Overview

What is Online Shopping Cart?

The online shopping cart is a function present in e-commerce or online shopping. It allows online shoppers to store their wanted products in the cart and order them if they want. This shopping cart works just like carts that we use when shopping physically.

Additionally, an online shopping cart gives convenience to the customers. It also enables them to have their wishlist and order them when they need the item or they want to. In conclusion, the shopping cart is a very useful function.

What is a Class Diagram?

The UML class diagram for shopping cart is crucial and useful for its development. This is because these are very effective in showing the shopping cart’s structure in detail, including the structures of each class. This works best with other Online Shopping Cart UML Diagrams.

Additionally, the class diagram blueprints show how things in the system work and are related. It also shows the system’s activities and the services it provides. Therefore, a class diagram defines the physical components of an online shopping cart and can directly relate to object-oriented languages.

Online Shopping Cart Class Diagram

This simple class diagram gives you the exact details about the shopping cart’s class characteristics and methods. It also clarifies the connections of classes in the function.

Here, I will be showing you the sample constructed class diagram provided with its attributes and methods. This is constructed with the simple idea derived from the common function of online shopping.

UML Class Diagram for Online Shopping Cart
UML Class Diagram for Online Shopping Cart

The illustration shows a simple idea of how the class diagram works. It resembles a flowchart in which classes are in boxes with three rectangles in each. The top rectangle has the class’s name; the middle holds the class’s properties, and the bottom contains the class’s methods.

The classes identified for Online Shopping Cart were the admin, seller, customer, users, transactions, payment, and delivery. Their roles are in the middle part and called their attributes. The function of each class is in its’ methods.

You can edit this diagram and it is up to you how will you create your class diagram. However, you need to be precise with your information and consider the decisions included.

Downloadable Pdf File

How to Draw a Class Diagram?

Time needed: 5 minutes.

Steps in creating Class Diagram for Online Shopping Cart.

  • Step 1: Familiarize Class Diagram Components

    Class Diagram Components are used to create class diagrams. They should be familiarized before you build the class diagram.

    To plot the class diagram you will need the class name, its attributes, methods, and their access (visibility). You will base the diagram on the evaluated information to have the exact Class Diagram.

  • Step 2: Determine the targeted users

    Classes are the main part of the diagram and it is presented in a box with three main partitions. It should be declared properly because it could be converted to codes.

  • Step 3: Analyze the activities included

    Attributes of a class should be placed in the middle part of a class. They were then assigned visibility symbols. This visibility has something to do with the codes.

    The operations will be placed at the bottom of a class and represent the functions of a class within the shopping cart.

  • Step 4: Plot the Class Diagram

    To map the relationship between the classes, you also need to know the meaning of the symbols at the end of each line that connects them. The ends represent different meanings and relations between two or more classes.


The class diagram is a modeled diagram that explains shopping cart’s classes and relationships. It can depict the names and attributes of classes, as well as their links and methods that make up the software.

Moreover, the class diagram is the most essential type of UML diagram and is critical in software development. It is an approach to showing the shopping cart’s structure in detail and part by part.

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