Use case diagram and activity diagram are not mutually exclusive, but complementary. They can be used together to provide a more complete and consistent view of the system.

Activity monitoring is highly valued by welfare and health personnel because it gives an overview of the well-being of the elderly. In this paper, a state transition diagram based activity ...

Abstract: UML activity diagram is suitable for modeling parallel and concurrent flows in an actual system. It is also significant for software testing. The subactivity state in activity diagram ...