Use Case Description - Example and Template (UML)

Use Case Description - Example and Template (UML)

Use cases aren’t just about diagrams. If you are planning development of an app, a project, or a complex system, it’s important to get a bird’s-eye view of the process. Use case descriptions list the components of your project step-by-step, so your team can survey the territory ahead.

Lucidchart’s online diagramming tool has a complete UML shape library and intuitive text editing. Import written use case descriptions into your diagram with one click!

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Use Case Description - Example and Template

Consider the use case of “browsing products and placing orders” in an online shopping system. Every site will have a unique flow, but will generally include browsing items, adding them to a cart, entering payment and shipping information, and confirmation. As a developer, it’s important to map out your site or app requirements from the beginning. A clear, concise use case description can act as a road map for your project. These descriptions can take either a conversational form (focusing on the interactions between the actors and the system) or a narrative form (telling the story of your project).

Lucidchart can help you build use case, activity, and sequence diagrams once you have written your description. The Lucidchart add-on for Google Docs is an ideal solution for combining the word processing power of Google Docs with the collaborative diagramming of Lucidchart.


Online Shopping System Use Case Description

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Use case description - example and template (UML)

Use Case Diagram Examples in Lucidchart

Once you have written your use case description and refined it, try building a use case diagram to represent your system visually. Click on the templates below to customize a use case diagram for online shopping systems, banking systems, or login pages.

Use case description - example and template (UML)

Online shopping system use case diagram example

The steps from browsing to checkout were listed in the description above. This diagram shows that process, but through images, not prose. Learn more about the conventions of UML use case diagrams by reading this guide.

Use case diagram examples

Online login use case diagram example

Any online shopping site is going to require a secure, reliable login for end users. How would you make a use case description for this process? Try this colorful diagram—you can set your own color scheme with one click.

Use case diagram examples

Banking system use case diagram example

By using our debit and credit cards online, we’re entrusting a great deal of sensitive information to our bank’s system. This diagram provides a high level Who’s Who when you interact with your bank—whether you swipe, scan, or type.


From the first germ of an idea to a beautiful final product, Lucidchart is committed to helping you design useful and beautiful diagrams, fully integrated with your text documents. Start your own use case description today!

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