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Very simple , using Alt fragment. Lets take an example of sequence diagram for an ATM machine.Let's say here you want. IF card inserted is valid then prompt "Enter Pin".... ELSE prompt "Invalid Pin". Then here is the sequence diagram for the same. Hope this helps! answered Jun 6, 2020 at 10:12.
Feb 18, 2021 · 733 4 9 25. Even not looking at the details your diagram is visibly wrong because in your statement there are 3 exclusives cases (ok, nok and not yet registered, nok and already registered) but in your diagram you have 2 consecutive fragments alt having each two cases. So you need one fragment alt with 3 cases, or a first fragment alt with 2 ...
Jul 2, 2016 · In the sequence diagram, you can use a combined fragment with an alt operator. This allows you to show alternative behaviors: Graphically, the alternatives are in tiled regions separated by dashed horizotal lines. You can document the precise condition for each alternative in a guard (i.e. [condition]). Example: Additional reading:
Just adding a clearer picture because this one at @joel.tony's answer is damn blur. As you can see the loop happens inside the frame called loop n. There is a guard, array_size, which controls the loop's iterations. In conclusion the sequence of the messages inside the loop n frame (those between DataControl and DataSource objects) will happen ...
Jan 14, 2015 · I have a question about generating sequence diagram from Java source code. When I googled I saw someone told to use visual paradigm (VP), but it does not generate sequence diagram for me. Some steps in my VP are different from manual. The manual says to choose method but my VP does not allow to select method in a special class.
Feb 21, 2014 · alt is used to describe alternative scenarios of a workflow. Only one of the options will be executed. opt is used to describe an optional step in the workflow. For example, for an online shop purchase sequence diagram you may use opt to describe how the user can add gift wrapping if she wishes. alt may be used to describe two variants of ...
Jul 4, 2016 · 39. Activity diagrams represents the flow of use cases. But sequence diagrams represents the interaction between classes or objects according to time.So there is a difference between these two diagrams. Before moving to activity diagrams you need to draw the use case diagram. using use case (system behaviour) diagram you can identify activities ...
You may want to do related threads together, as separate programs. So, Thread 1 (controller thread) starts, spawns 3 threads, they process and report back to controller. Then, these would be in one sequence diagram. There may be 20 other threads being ignored, but that is fine, as they are doing other unrelated tasks. – James Black.
Oct 12, 2023 · A sequence diagram is appropriate for showing the interaction between two or more objects. This typically involves some request and response messages and possibly their parameters. In contrast, a flowchart is appropriate for showing the control flow for one process, focusing on things like decisions (if-then-else) and parallel processing ...
Jul 7, 2015 · Here is an example of a sequence diagram I created for a search use case example of a sequence diagram I ...
