Use Case Diagram for the Parking Lot

Let’s build the use case diagram of the parking lot system and understand the relationship between its different components.

First, let’s define the different elements of our parking lot, followed by the complete use case diagram of the system.

System

Our system is a "parking lot."

Actors

Here are the main actors of our parking lot system.

Primary actors

• Customer: This actor can park the vehicle in the allocated parking space according to the vehicle type and pay for the parking before exit.

• Parking agent: The parking agent will assist the customer and perform all the tasks that a customer can do, such as paying the parking ticket on behalf of the customer.

Secondary actors

• Admin: This can add, remove, or update a spot, agent, entry/exit panels, and view/update accounts.

• System: This is ...