Sunday, March 23, 2008

System Sequence Diagram for Use Case 5















System Sequence Diagram for Use Case 5

4 comments:

Yanic said...

The last two return arrows aren't correct. Perhaps you need an 'alt' combined fragment?

Btw, if you're still looking for something to draw your sequence diagrams with, check out this demo of Trace Modeler.

It combines automatic layout with a simple drag&drop interface, so that would save you some time. And it has 'alt' combined fragments too ;o)

fractioncalc said...

What do you mean? by an 'alt' combine fragment? These last two arrows are for the exception conditions that may arise.

Yanic said...

The problem is that the activation ends before the two alternative returns are shown.

An 'alt' combined fragment is a different way to show some mutually exclusive interactions.

You can find some explanation and examples in this this tutorial on sequence diagrams.

fractioncalc said...

Thank you, you are completely correct.