[Software Engineering] use case diagram

In the software development process, the software design stage plays an important role. A good design can improve the development efficiency. The design use case diagram clearly shows the user's operation behavior. The use case diagram can be drawn using UML software. In this example, the borrower request case relationship in the library management system design is drawn based on IBM Rational Rose.

The procedure is as follows:

1: open Rose

2. Create a Use Case View

Right-click Use Case view and choose new --> Use Case digoal

 

3. Use Case Toolbar

From top to bottom: select one item; add text box; add comments; Connect the elements in the diagram to the comments; package; participant; Use Case; association relationship; dependencies and instantiation (including extensions and usage relationships); General relationships.

 

4. Add participants and Use Cases

 

5. Modify the dependency and instantiation relationship

Double-click the dependency and instantiate arrow to open the property button.

Select stereotype. If the drop-down list does not exist, you can manually enter the stereotype value, such as extend use.

So far, a borrower's request case diagram has been created.