UML Activity Diagram. Design Elements
UML Activity Diagram is a type of Behavior Diagrams that graphically describes decomposition of the some activity on the components.
Activity Diagrams are used in modeling of business processes, technological processes, sequential and parallel computations.
UML Activity Diagram allows to show the sequence, branching and synchronization of processes.
To design UML Activity Diagrams use the following shape types:
- rounded rectangles to describe the actions;
- diamonds to describe decisions;
- bars to represent the start or end of the activities that occur at the same time;
- black circle to indicate the start of the workflow;
- encircled black circle to indicate the end of the workflow;
- arrows to represent the order in which activities happen.
Activity Diagrams were a specialized form of the State Diagrams in UML 1.x. In UML 2.x, the Activity Diagrams were reformed and now are based on Petri net-like semantics that allows to model a lot more situations.
The Rapid UML Solution for ConceptDraw DIAGRAM contains 13 vector stencils libraries with 393 interactive shapes that you can use to design your UML diagrams.
To design an Activity Diagram use the UML Activity Diagram library.
UML Activity Diagram library contains 37 shapes:
- Object
- Data store
- Central buffer
- Expansion region
- Control flow (direct)
- Control flow (smart)
- Object flow (direct)
- Object flow (smart)
- Divider
- Decision/Merge
- Time event action
- Send signal node
- Receive signal node
- Expansion node
- Pin
- Vertical fork/join
- Horizontal fork/join
- Vertical swimlane
- Horizontal swimlane
- Connector
- Initial node
- Final node
- Flow final
- Control flow
- Condition
- Symbol { }
- Symbol << >>
- Subactivity state
- Call behavior
- Frame, fragment
- Note
- Action
- Swimlanes (vertical)
- Swimlanes (horizontal)
- UML connector (direct)
- UML connector
- Note connector
Pic.1. UML Activity Diagram Library
Pic.2. UML Activity Diagram Library Elements
ConceptDraw Rapid UML solution provides UML Activity Diagram library of vector stencils for activity diagram design elements like rounded rectangles of activities, diamonds of decisions, bars of the start (split) or end (join) of concurrent activities, black circle of the start (initial state) of the workflow, encircled black circle of the end (final state), etc.
Use UML Activity Diagram library to draw your own activity diagrams that show the business and operational stepwise workflows of components in your system.
All libraries for creating UML diagrams are available inside the ConceptDraw DIAGRAM Templates and samples are located in the Rapid UML section of ConceptDraw STORE.
TEN RELATED HOW TO's:
UML 2 4 Process Flow Diagram →
This sample was created in ConceptDraw DIAGRAM diagramming and vector drawing software using the UML Activity Diagram library of the Rapid UML Solution from the Software Development area of ConceptDraw Solution Park.
Organizational Chart →
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Bar Chart Examples →
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Quality Mind Maps - samples and templates →
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Data Flow Diagram Symbols. DFD Library →
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Value Stream Mapping Symbols →
VSM symbols are the best for a production process designing. The entire Value Stream Mapping method uses a graphical representation of the manufacturing process, factors' pros and cons, that all stakeholders can easily understand. Value Stream Mapping is a graphical technique that provides possibilities to improve analysis of a manufacturing process, at the stage of the transferring information or materials that required to deliver a product or service to the customer.
Ansoff Matrix →
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Financial Comparison Chart →
This sample shows the Bar Chart of the leverage ratios for two major investment banks. The leverage ratio is the ratio of the total debt to the total equity; it is a measure of the risk taken by the bank. The higher of the leverage ratio denotes the more risk, the greater risks can lead to the subprime crisis.
Accounting Flowchart: Purchasing, Receiving, Payable and Payment →
Accounting flowchart is a system of processes to represent accounting system of an organization. How to create flowcharts for an accounting information system.
Using Fishbone Diagrams for Problem Solving →
Problems are obstacles and challenges that one should overcome to reach the goal. They are an inseparable part of any business, and the success of an enterprise often depends on ability to solve all problems effectively. The process of problem solving often uses rational approach, helping to find a suitable solution. Using Fishbone Diagrams for Problem Solving is a productive and illustrative tool to identify the most important factors causing the trouble. ConceptDraw DIAGRAM extended with Fishbone Diagrams solution from the Management area of ConceptDraw Solution Park is a powerful tool for problem solving with Fishbone Ishikawa diagram graphic method.