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Learning Technology FrameWork.pdf

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Creating composite use cases<br />

Lesson 2: Creating Your First Use Case Diagram<br />

34<br />

If you want to delete only the graphic representation of an object,<br />

but not the KnowledgeBase object itself, you can use the Graphics<br />

option on the Terminate submenu. Alternatively, you can use the<br />

Delete key on your keyboard or the Delete Graphics option on the<br />

Edit menu.<br />

Tip<br />

If you accidentally delete an object you want to keep, select<br />

Undo on the Edit menu to recreate it. Alternatively, if you’ve<br />

deleted only the graphic, you can recreate it by holding down the<br />

Control key while you use the tool with which you originally<br />

created the object.<br />

Creating composite use cases<br />

Use cases that contain<br />

other systems<br />

Composite use cases are use cases that incorporate one or more<br />

additional systems. In your Employee Hiring System use case<br />

diagram, you’ll include a composite use case representing a<br />

subsystem within the Employee Hiring system. In Lesson 3,<br />

“Getting More Specific about Your Hiring System,” you’ll create a<br />

second use case diagram to show the details of this composite use<br />

case.<br />

What you do To create a composite use case:<br />

1 In the Use Case Diagram Tools tool folder, click and hold on the<br />

Composite Use Case tool.<br />

2 Move your cursor below the Screen Resumes use case and release<br />

the mouse button to create the new composite use case graphic.<br />

3 Call your composite use case Hire Employees. Type this name<br />

and then click on the window background to close the edit box.

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