What is forking and joining in activity diagram?
A Fork notation in a UML Activity Diagram is a control node that splits a flow into multiple concurrent flows. This will have one incoming edge and multiple outgoing edges. A join node is a control node that synchronizes multiple flows. This will have multiple incoming edges and one outgoing edge.
What is join in activity diagram?
Join node is a control node that has multiple incoming edges and one outgoing edge and is used to synchronize incoming concurrent flows. Join nodes are introduced to support parallelism in activities.
What is fork join condition?
Forks are used to split an incoming transition into concurrent multiple transitions leading to different target states. Joins are used to merge concurrent multiple transitions into a single transition leading to a single target. They are semantic inverses.
Which are the notation for activity diagram?
Activity Diagram Notations – Initial State – The starting state before an activity takes place is depicted using the initial state. A process can have only one initial state unless we are depicting nested activities. We use a black filled circle to depict the initial state of a system.
What is fork node?
For automation interface purposes, a Fork Node is a Control Node that has its Node Type set to Fork Node. A Fork Node splits a flow into multiple concurrent flows. A Fork Node has one incoming flow and multiple outgoing flows.
Which of these diagrams has fork and join?
The activity diagram helps in envisioning the workflow from one activity to another. It put emphasis on the condition of flow and the order in which it occurs. The flow can be sequential, branched, or concurrent, and to deal with such kinds of flows, the activity diagram has come up with a fork, join, etc.
Why do we use fork in activity diagram?
A fork node is used to split a single incoming flow into multiple concurrent flows. It is represented as a straight, slightly thicker line in an activity diagram. A join node joins multiple concurrent flows back into a single outgoing flow. A fork and join mode used together are often referred to as synchronization.
What is Fork and join in UML diagram?
Fork and Join in UML Activity Diagrams (Forking and Joining) Fork / Join. A Fork notation in a UML Activity Diagram is a control node that splits a flow into multiple concurrent flows. This will have one incoming edge and multiple outgoing edges.
What is the difference between a fork and a join node?
A Fork Node can have exactly one incoming Activity Edge (or Transition), though it may have multiple outgoing Activity Edges (or Transitions). A Join Node can have exactly one outgoing Activity Edge (or Transition) but may have multiple incoming Activity Edges (or Transitions). The Fork and Join are represented by the same symbol.
What is the difference between a join node and activity diagram?
Fork and join nodes are used to generate concurrent flows within an activity. Activity diagram is used to model business processes and workflows.
What are the symbols in an activity diagram?
Basic Activity Diagram Notations and Symbols. 1 Initial State or Start Point. A small filled circle followed by an arrow represents the initial action state or the start point for any activity 2 Activity or Action State. 3 Action Flow. 4 Object Flow. 5 Decisions and Branching.