A state chart diagram shows a state machine emphasizing the flow of control from state to state. An activity diagram is a special case of a state chart diagram in which all or most of the states are activity states and all or most of the transitions are triggered by completion of activities in the source state An activity is an ongoing non-atomic execution within a state machine.
Activity diagrams may stand alone to visualize, specify, and document the dynamics of a society of objects or they may be used to model the flow of control of an operation. State chart diagrams may be attached to classes, use cases, or entire systems in order to visualize, specify, and document the dynamics of an individual object. Explain Clean Room Testing October 31, Activity diagram is flow of functions without trigger event mechanism, state machine is consist of triggered states.
Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 10 years, 7 months ago. Active 1 year, 11 months ago. Viewed 63k times. Improve this question. Add a comment. Active Oldest Votes. Improve this answer. Worth taking a look, it has nice visual explanation of both diagrams: cs. I would say these two diagrams overlaps each other. Onizuka Onizuka 1 1 gold badge 4 4 silver badges 14 14 bronze badges.
The Activity diagram represents the UML, which is used to model the workflow of a system. The Sequence diagram shows the message flow from one object to another object.
The Activity diagram shows the message flow from one activity to another. Sequence diagram is mainly used to represent the time order of a process. Activity diagrams symbols can be generated by using the following notations: Initial states: The starting stage before an activity takes place is depicted as the initial state.
Final states: The state which the system reaches when a specific process ends is known as a Final State. An activity diagram visually presents a series of actions or flow of control in a system similar to a flowchart or a data flow diagram. Activity diagrams are often used in business process modeling.
They can also describe the steps in a use case diagram. Activities modeled can be sequential and concurrent. The nodes of an activity diagram always represent actions, and an arrows represents a transition from the source activity to the target activity that is triggered by the completion of the source activity.
For example: Recall that a transition without a trigger is assumed to be triggered by a completion event. Activity diagram is another important diagram in UML to describe the dynamic aspects of the system. Activity diagram is basically a flowchart to represent the flow from one activity to another activity.
The activity can be described as an operation of the system. A swimlane diagram is a type of flowchart that delineates who does what in a process. Arrow Diagram also known as, activity network diagram, or arrow programming method is used to determine the optimal sequence of events and their interconnectivity.
It is often considered as a variation of PERT program evaluation and review technique chart.
0コメント