This UML class diagram represents a Restaurant Management System, outlining key entities, their attributes, operations, and relationships. The Restaurant class maintains details like name, contact, and operating hours, linking to a Menu that holds multiple MenuItems. Each menu item contains pricing, availability, and update operations. Customers place Orders, each linked to a Table and comprising multiple OrderItems with quantities and prices.
The Customer class stores contact details and loyalty points, supporting updates and redemptions. Staff members, including Chefs and Waiters, inherit common attributes but have specialized roles—chefs prepare dishes, while waiters serve and take orders.