Elaborating use case

A use case can be elaborated by using sequence diagram and activity diagram to model its interactions and activity flows respectively.

Elaborating use case by sequence diagram

You can document the communication between user and system through the use of flow of events. You can then visualize the communication in sequence diagram through synchronizing flow of events to sequence diagram.

Synchronizing flow of events to sequence diagram

1. Right click on the target use case and select Open Use Case Details... from the pop-up menu.
   

   Open use case details

2. When the details dialog box pops out, select the Flow of Events tab.
   

   Open flow of events editor

3. Edit the steps in the flow of events editor. When finish editing, right click on the editor and select Synchronize to Sequence Diagram from the pop-up menu.
   

   Generate sequence diagram from flow of events

Updating sequence diagram from flow of events

When you have made some changes on flow of events, you can update the changes to sequence diagram accordingly. Right click on the flow of events editor and select synchronize to the name of sequence diagram from the pop-up menu.

Update changes from flow of events to sequence diagram

Elaborating use case by activity diagram

You can document the events of a use case through the use of flow of events. You can then visualize the events in activity diagram through synchronizing flow of events to activity diagram.

Synchronizing flow of events to activity diagram

1. Right click on the target use case and select Open Use Case Details... from the pop-up menu.
   

   Open use case details

2. When the details dialog box pops out, select the Flow of Events tab.
   

   Open flow of events editor

3. Edit the steps in the flow of events editor. When finish editing, right click on the editor and select Synchronize to Activity Diagram from the pop-up menu.
   

   Generate activity diagram from flow of events

Navigating to flow of events

If you want to return to the flow of events, right click on a target action in activity diagram and select Related Elements > Open Flow of event from the popup menu.

Open flow of events from activity diagram

Updating activity diagram from flow of events

When you have made some changes on flow of events, you can update the changes to activity diagram accordingly. Right click on the flow of events editor and select synchronize to the name of activity diagram from the pop-up menu.

Update changes from flow of events to activity diagram