Use Case Diagram for the Car Rental System

Let’s build the use case diagram for the car rental system and understand the relationship between its main actors and system functions. First, we’ll define the different elements of our system, followed by the complete use case diagram and a detailed breakdown of actors and use cases.

System

Our system is the car rental system. It manages automated vehicle reservations, returns, payments, and services for customers across multiple branches.

Actors

Now, we’ll define the main actors of our car rental system.

Primary actor

• Customer: The primary user, able to register, search vehicles, make and manage reservations, pick up and return vehicles, and make payments. ...

Secondary actor