UML Use Case Diagrams

use case diagram example

UModel Use Case Diagram Features:

  • Toolbar for quick access to use case elements
  • Entry helpers and fast editing buttons
  • Right-click context menu activates anywhere in diagram
  • Cascading styles for colors, fonts, line size, and more
  • Customizable alignment grid
  • Elements can be assigned to diagram layers and selectively viewed or hidden
  • Unlimited undo/redo encourages exploring new ideas

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Intuitive Use Case Diagram Creation

Use case diagrams are the starting point for UML-based software development projects. As you draw your first use case, you will immediately experience the user-friendly flexibility of Altova UModel® 2015.

A UML use case diagram describes the interaction of any person or external device with the system under design. Use case diagrams are often developed in collaborations between software developers and other project stakeholders, such as users of the proposed system, who will not go on to perform the actual coding.

You can add use case elements to your diagram from the toolbar or the right-click context menu. Either way, you will see entry helpers, fast editing buttons, and element characteristics to assist you. Whenever you add an element to the diagram, UModel even automatically selects the name field so you can just start typing your own description. The elements automatically size to fit your identifier, or you can click and drag any corner to resize manually.

Cascading styles permit you to change colors, fonts, and other properties for use case elements either individually, in groups, or throughout the project.

Custom image for a use case actor in Altova UModel

Enhanced Images for Use Case Actors

UModel introduces a new stick figure that can scale horizontally or vertically without forcing your actor into an awkward orientation. Alternatively, UModel lets you assign your own images as symbols for your actors.

You can use any of the images in the extensive library provided with UModel or build your own set of .bmp illustrations to represent the various human roles or devices that are actors in your projects.

The traditional stick figure does not visually differentiate the roles of various human actors such as a customer, a shipping clerk, or a payroll manager. Customized actors enhance your use case diagrams on screen and in printed documentation.

Editing a use case diagram in Altova UModel

Fast Editing Buttons

UModel features fast editing buttons and specialized entry helpers for each supported UML diagram type. Roll your cursor over any helper or button to view a tool tip!

When you go back later to revise your UModel use case diagram, the entry helpers and fast editing buttons reappear as you select the diagram element again.

Hyperlinks in Use Case Diagrams

You can create hyperlinks in use case diagrams to link external files, Web addresses, or other diagrams in your project. For instance, you might want to add a hyperlink to your use case oval that references a sequence diagram.

Click the hyperlink to conveniently open the sequence diagram and view implementation of that project requirement.

Use case diagram with a hyperlink

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