Class Diagram Example: Ticket Selling

Description:

This class diagram template graphically represents the object model of a ticket selling system. It contains classes like Customer, Reservation, Ticket and Show.

You can edit this Class diagram template. Click Use this Template to start. Add and remove Class shapes to reflect your own object model.

What is Class Diagram?

The class diagram is an important part of the UML, as it captures the static view of the system. The class diagram models classes in the real world and specifies the relationships between them. A class is essentially a template from which any number of objects can be derived. It does not exist as an object in its own right, but it defines the properties (or attributes) that an object will have, and the operations that can be performed by the object. We can also use packages represent groups of related classes and relationships.

Guidelines for creating Class Diagram?

  1. Identify classes
    • a. From domain analysis such as textual analysis
    • b. From CRC cards
    • c. From use case description
    • d. From sequence diagram or use case scenarios
  2. Give analysis a name and a brief description which could be done through terms and glossary
  3. Structure classes in the right places of the diagram and related them with simple relationships
  4. As the development move forward, detail the class with attributes and operations, this often done in conjunction with use case and sequence diagrams
  5. Refine the class diagram with inheritance for future reuse
  6. Elaborate the details which is helpful for implementation such as accessibility, rules, constraints and etc.
  7. Put related classes into packages to form your software architecture

When to use Class Diagram?

As a sketch:

  • Perform visual modeling rather than lengthy textual description
  • Casually use for illustrate initially ideas develop without the need of upfront requirement documentation
  • Instant revise from code to class diagram to pinpoint a specific problem
  • Used it to visual model to get rough selective ideas just in time whenever needed

As a blueprint:

  • a complete design to be implemented
  • typically done with a proper UML modeling tools

As code engineering:

  • Perform model to code forward engineering
  • Perform code to model reverse engineering
  • Keep code and model in sync by performing round-trip engineering

As data engineering:

  • Design data modeling based on detailed class diagram
  • Reverse class or object wrapper base on database
  • Use database framework such as Hibernate ORM Framework

As Web API generation

  • Generate web API based on Class Diagram such as SWAGGER

Keen to try VP Online?

No limitations, no obligations, no cancellation fees.


Start a Free Trial

We use cookies to offer you a better experience. By visiting our website, you agree to the use of cookies as described in our Cookie Policy.

OK