![]() Save the file under a unique name within its directory.The activity diagram example below describes the workflow for a word process to create a document through the following steps: Swimlane and Partition - A way to group activities performed by the same actor on an activity diagram or to group activities in a single thread More Activity Diagram Examples Activity Diagram - Modeling a Word Processor Join Node - Bring back together a set of parallel or concurrent flows of activities (or actions). Merge Node - Bring back together different decision paths that were created using a decision-node.įork Node - Split behavior into a set of parallel or concurrent flows of activities (or actions) Object Node - Represent an object that is connected to a set of Object Flowsĭecision Node - Represent a test condition to ensure that the control flow or object flow only goes down one path Initial Node - Portrays the beginning of a set of actions or activitiesĪctivity Final Node - Stop all control flows and object flows in an activity (or action) Object Flow - Show the flow of an object from one activity (or action) to another activity (or action). Activity Diagram Notation SummaryĪctivity - Is used to represent a set of actionsĬontrol Flow - Shows the sequence of execution In UML, UML activity diagrams are represented as rounded rectangles. Graphical representation of UML activity diagram In fact, you can use a basic activity diagram to represent a flowchart, similar to the equivalent diagram: ![]() UML activity diagrams are object-oriented, while flowcharts are process-oriented.UML activity diagrams can represent the situation of concurrent activities, but flowcharts cannot.It focuses on the behavior of the system rather than the process of the system. The UML activity diagram describes the rules followed by the sequence relationship of object activities.There is a strict sequence and time relationship between each processing process. Its main control structure is sequence, branch and cycle. The flow chart focuses on the description of the processing process.The difference between UML activity diagram and flowchart Describe the flow from one state to another, mainly involving the participation of external events. while state diagrams focus on the flow of control from one activity to another.UML activity diagrams focus on the flow of control from one activity to another, which is an internal processing-driven flow.Activity Diagram at a GlanceĪlthough both UML activity diagrams and state diagrams are representations of state machines, there are essential differences between the two: UML activity diagram is essentially a flow chart. It describes the sequence of activities and shows the flow of control from one activity to another. UML activity diagram is another common tool used by UML to model the dynamic behavior of the system. This article focuses on the concept of UML activity diagram.
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