Generalization in use case diagrams12/3/2023 ![]() ![]() If you want to add a use case with a custom size, click on the desired position on the diagram and drag to define the size of the new use case.If you want to add a use case with the default size, just click on a diagram canvas and the use case will be inserted to the specified position. ![]() Click on the Use Case button in the Use Case Diagram group in the toolbox.If you want to insert multiple actors in a row, double click (or click twice) on the Actor button in the toolbox and draw as many actors as you want in the diagram editor.If you want to add an actor with the default size, just click on a diagram canvas and the actor will be inserted to the specified position.Specify the bounds of the new actor by dragging on the diagram canvas.Click on the Actor button in the Use Case Diagram group in the toolbox.Open Project sidebar, right-click on a project (or a folder) node, and in the Add Diagram submenu, choose UML Use Case Diagram.Ĭreate a new UML use case diagram How to Draw Use Case Diagram Elements? How to Draw an Actor?.Switch to Project tab in the ribbon and click on the Use Case Diagram item in the Content gallery.Press CTRL+SHIFT+D, choose Use Case Diagram from the UML group, enter the name, and click on the OK button.Click on a Plus button in the tab switch bar, navigate to UML group and click on the UML Use Case Diagram item.You can create a new use case diagram in multiple ways: The arrow of this relationship points from an including use case to an included use case.Ī system boundary is a rectangular area which helps you to divide use cases into visual groups. The included use case is a mandatory part of the including use case. The arrow of this relationship points from an extending use case to an extended use case.Īn including use case is dependent on an included use case. An extended connector allows you to define an extension point, which refers to the step in the flow where the use case is extended. The extended use cases are dependent on the extending use case. State - it can be draft, review, final or canceledĪn extending use case extends the behavior of an extended use case.Level - it can be: very high summary, summary, user goal, subfunction or too low.Scope - it can be: organization black box, organization white box, system black box, system white box or component.It specifies actions which lead to achieving a goal. It defines the interaction between a role (actor) and a system. Secondary actors (or supporting actors) - the system start an interaction with them as a reaction to the actions of primary actors.Ī use case represents the functionality of an analyzed system, it captures a requirement.Primary actors - start an interaction with the system.It can be a human role, an external system, or an application. Software Ideas Modeler offers tools for following elements of a use case diagram:Īn actor represents a role in a system. ![]()
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