Activity Diagram for the Amazon Online Shopping System

Activities diagrams are a great way to visualize the flow of messages from one activity to the other in the system. There can be different activity diagrams that we can create for our Amazon online shopping system. In this lesson, we will create activity diagrams for the following two activities:

• A customer buying a product

• Activity challenge: The customer receives their order.

A customer buying a product#

The following are the states and actions that will be involved in this activity diagram.

States#

Initial state: The customer opens Amazon.

Final state: The customer proceeds with checkout.

Actions#

The customer opens the website. They either search or browse the website, select a product, and proceed to buy it.

Activity challenge: The customer receives their order#

You’ll help us in creating an activity diagram of a customer receiving their order.

A skeleton of the activity diagram is provided below.

Notice that the actions in the diagram above are numbered from 1 to 14. The slots below represent the activities, and the arrows represent the flow from one activity to the other.

Can you rearrange the slots below in the correct order they should appear in the activity diagram above?

Note: If you get stuck, just click the “Show Solution” button to check the correct answer.

Alternatively, you can click the "Show complete diagram" button below to see the complete activity diagram.

We’ve looked at some of the activity diagrams of our Amazon online shopping system. In the next lesson, we’ll present the code for our designed classes in some of the most popular languages.