Activity Diagrams
Type of UML
Just Like Flow charts
Syntax
| Shape | Purpose |
|---|---|
| Filled Dot | Start of AD |
| Prolong Oval | An Action (Starting with Verb) |
| Arrow | Represents the direction |
| Diamond | Decision, choice, if / else |
| Double Horizontal Lines | For concurrent tasks |
| Sub Hierarchy | Defines that an activity has a sub activity |
| Filled Dot encircled | End of AD |
Syntaxial Rules
- No two diamonds can be together
- The sub activity of an activity has to be drawn in another AD
- The arrows of the diamonds can be drawn from any side
Swimlane Activity Diagram
Consists of multiple activity flows within a single diagram
The flow can shift from one to another
Helps us to determine the involvements of multiple participants / actors
