How-Tos

How to Create a UML Use Case Diagram

Illustrate the inner workings of a system
Airport

Part 1: What is UML Use Case Diagram?

Unified Modelling Language (UML) is a type of language used to illustrate the inner workings of a system, which include its actors, actions, roles, and classes. Originally used in the fields of software and engineering, UML has now made its way into business, and is a popular method of documenting business processes.

UML primarily uses diagrams to represent systems. These diagrams can be broken down into two types: behavioural UML diagrams, and structural UML diagrams.

UML is an extremely versatile and widely-recognised language. It is the standard language used by many developers, as well as an increasing number of business professionals. Its flexibility means that it can be applied to a number of IT or business-related situations, so that you can make it applicable to the system or technology you are using.

Part 2: How to Make a UML Use Case Diagram Effortlessly?

How to make a UML use case diagram easily? Using EdrawMax to create your own UML use case diagram.

Step 1: Open EdrawMax desktop software or EdrawMax web-based application.

Step 2: Navigate to [New]>[Software Development]>[UML Modeling]

Open UML use case diagram template

Step 3: Select one UML use case diagram template to edit on it or click the [+] sign to start from scratch. Also, you can use massive UML use case diagram symbols and elements from libraries in left menu to customize your UML use case diagram.

customize a UML use case diagram in EdrawMax

Step 4: Once finished your creation, you can export the file in multiple formats, including Graphics, PDF, editable MS Office file, SVG and Visio vsdx file.

Save or export UML use case diagram in EdrawMax

Step 5: Besides, you can share your UML use case diagram with others via social media and web page. Or publish your UML use case diagram in EdrawMax template gallery to show your work with others.

share and publish UML use case diagram

Part 3: UML Use Case Diagram Examples

Example1: UML Use Case Diagram for Online Shopping

This is an example of a UML use case diagram for online shopping. Customers use a certain website to make online purchases. View Items, Make Purchase and Client Register are the top level use cases. If customers only want to find and see some products, View Items use case is their first choice. Besides, Client Register use case allows customers to register on the website to get some coupons or be invited for private sales.

UML use case diagram for Online Shopping

Example2: UML Use Case Diagram for Airport Check-In and Security

This is an example of a business use case diagram which is usually created during Business Modeling and is rendered here in Rational Unified Process (RUP) notation.Business actors are Passenger, Tour Guide, Minor (Child), Passenger with Special Needs (e.g. with disabilities), all playing external roles in relation to airport business.Business use cases are Individual Check-In, Group Check-In (for groups of tourists), Security Screening, etc. - representing business functions or processes taking place in airport and serving the needs of passengers.

UML use case diagram for Airport Check-In and Security

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Part 4: Conclusion

According to this article, there are mainly three parts to illustrate what is UML use case diagram, to tell you how to create UML use case diagrams and to show you some UML use case diagram examples. Generally speaking, a UML use case diagram can visually represent a system along with its main actors, roles, and actions in order to make people better understand the information about the system.

EdrawMax is an easiest all-in-one diagramming tool, you can create UML use case diagrams and any other type diagrams with ease! With substantial UML use case diagram symbols and cliparts, making UML use case diagrams could be as simple as possible. Also, it supports to export your work in multiple formats and share your work with others. Get started to create your UML use case diagrams now!

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