Class diagram for the Restaurant Management System

We’ll create the class diagram for the restaurant management system. In the class diagram, we will first design the classes and then identify the relationship between classes according to the restaurant management system design problem requirements.

Components of the restaurant management system

As mentioned, we’ll follow the bottom-up approach to design a class diagram for the restaurant management system.

Person

The Person class is extended by the Waiter, Receptionist, Manager, and Customer classes and stores the person’s name, email, and phone number.

• Waiter: Takes an order from the customer and generates the bill.

• Receptionist: Creates a reservation.

• Manager: Can update the seating plan and can also update the menu.

• Customer: This derived class can make reservations, place orders, and pay bills.

Table and table seat

Table: This class is identified by an ID, a limited seating capacity, a specific location, and status. A table may have multiple seats.

Meal and meal item

Meal: It represents a customer's meal at a specific seat and table, containing a list of ordered meal items.

MealItem: It is identified by a meal item ID and has a specific quantity that can be updated.

Menu, menu section, and menu item

Menu: It has a unique ID and title, a description, and may have several sections.

MenuSection: This class represents a section of the menu that has an ID, a title, and a description. It may have multiple menu items.

MenuItem: It is identified by an ID and has a title, ...