Sequence Diagram for the Restaurant Management System

Sequence diagrams are a great way to understand the interactions between different entities and objects in the system. There can be different sequence diagrams that we can create for our restaurant management system. In this lesson, we will create sequence diagrams for the following two interactions:

• Customer makes a reservation and receives notification.

• Sequence challenge: Customer places the order and pays the bill.

Making a reservation

The sequence diagram for making a reservation should have the following actors and objects that will interact with each other:

• Actors: Customer and Receptionist

• Objects: TableReservation and Notification

Here are the steps in the reservation interaction:

1. The customer initiates the process by searching for tables for a specific time and date.

2. The system returns a list of available tables to the customer.

3. The customer requests a reservation by selecting a table, time, and date.

4. The receptionist confirms and saves the reservation in the system.

5. The reservation is recorded and stored under the customer’s details.

6. As the reservation time approaches, the system sends an automated notification to the customer.

7. The customer receives the notification about their upcoming reservation.

Based on the flow above, the sequence diagram for making a reservation in a restaurant management system is given below: