Use Case Diagram for the Amazon Online Shopping System

Let’s build the use case diagram of the Amazon problem and understand the relationship between its different components.

First, we’ll define the different elements of Amazon, followed by the complete use case diagram of the system.

System

Our system is the "Amazon shopping system."

Actors

Now, we’ll define the main actors of Amazon.

Primary actors

• Authenticated user: This actor can search for products using the catalog, place or cancel orders, and add new products to sell.

• Guest: The guest actor can search for products using the catalog, add items to a shopping cart and update it. However, it needs to become a registered/authenticated member to place an order.

Secondary actors

• Admin: This can add, remove, or update an account as well as add, modify, or delete existing product categories.

• System: ...