In this ER diagram for a car rental system, entities are shown using square boxes containing their respective attributes. Relationships between entities are illustrated to showcase the system's functionality. The diagram shows the operations of a car rental company with offices situated in multiple cities, staffed by multiple employees. Customers can either rent vehicles of various types or make reservations for exploration purposes. Through this visual representation, the workings of the car rental system, including customer interactions is depicted, facilitating a better understanding of the system's architecture and processes.
