san kumar parihar wrote:In my opinion:
1) Both. You may use Loop Fragment with [0,*] iterations and add notes. I have not seen any notation in sequence diagram (is there any?) to denote activities that occur periodically so you need to mention that in notes
2) I have similar situation and I am inclined towards using an isolated class digram (on side of main class diagram). Fortuantely I have more to depict that what you have
Raja Pal wrote:
If the event of the timing interval is to be depicted use the UML Diagram - "Activity Diagram" - which can best represent this! Sequence only shows the timing order of method calls not the trigger/time event of the method call. However you can use the sequence diagram with the timer(int inerval) method invocation depicted on the service instance.