Sequence diagram - Activation bar

[Shruti Verma]

Hi,

Is it necessary to show activation bars on the life line in sequence diagrams? Can I do without them as I understand they are generally optional. Candidates who have passed the exam, can you kindly provide your suggestions?

Thanks.

[Murali Ranga]

My design was with activation bar.
It shows time the object is "active or object is performing an action.I always prefer with activation bar
In my opinion the diagram will be very clear and easy to understand If you have multiple scenarios in one diagram.

[Shruti Verma]

Thanks Murali for sharing your opinion.