In the class diagram, we will first design and create the classes, abstract classes, and interfaces for the system. Then, we’ll identify the relationship between classes in accordance with all the requirements of the airline management system.

Components of an airline management system

In this section, we’ll define the classes for an airline management system. As mentioned earlier, we will design the airline management system using a bottom-up approach. We will create the classes of small components first. Next, we will integrate these components and create the class diagram for the entire airline management system.


The Account class identifies the username and ID of an airline management system user. The class definition is represented below:

Level up your interview prep. Join Educative to access 70+ hands-on prep courses.