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 PRO 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

UML Activity Diagram library

Pic.1. UML Activity Diagram Library

UML Design Elements: Activity (Win, Mac)

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.

UML Activity Diagram

UML Activity Diagram

All libraries for creating UML diagrams are available inside the ConceptDraw PRO. Templates and samples are located in the Rapid UML section of ConceptDraw STORE.

UML Diagram Solution


Value stream with ConceptDraw PRO

The Value stream is a totality of all actions on the projection, order composition and production: starting from creation a product project to launching this product, from order to delivery, from extraction of raw materials to ready product manufacturing. Value stream mapping is a process of visualization of these actions and creation of a detailed and graphical map.value stream maping objects, value stream process diagram, value stream design process elements
Picture: Value stream with ConceptDraw PRO
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UML Activity Diagram

UML Activity Diagram illustrates the business and operational step-by-step workflows of components in a system and shows the overall flow of control. You can use the appropriate stencils of UML notation from UML Activity library with 37 objects. ConceptDraw is ideal for software designers and software developers who need to draw UML Activity Diagrams. Use ConceptDraw PRO diagramming and vector drawing software enhanced with Rapid UML solution from ConceptDraw Solution Park to create your own UML activity diagrams that show the business and operational workflows of components and overall flow of control in your systems. Such software provides coloring UML diagrams for various purposes and simplifying work of the engineers.Create UML activity diagram
Picture: UML Activity Diagram
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UML diagrams of business processes. The Rapid UML solution provides diagram examples, templates and vector stencils libraries for quick and easy drawing all types of UML 2.x and 1.x diagrams: UML activity diagrams, UML communication (collaboration) diagrams, UML component diagrams, UML composite structure diagrams, UML deployment diagrams, UML interaction overview diagrams, UML object diagrams, UML package diagrams, UML sequence diagrams, UML state machine diagrams, UML timing diagrams, UML use case diagrams.UML Business Process - Activity conducting
Picture: UML Business Process
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Diagramming Software for Design UML Activity Diagrams

Activity diagram describes the business and operational step-by-step workflows of components in a system. An activity diagram shows the overall flow of control.Diagramming Software for Design UML Activity Diagrams (Win, Mac)
Picture: Diagramming Software for Design UML Activity Diagrams

Swim Lane Flowchart Symbols

Use the set of special professionally developed swim lane flowchart symbols - single, multiple, vertical and horizontal lanes from the Swimlanes and Swimlanes BPMN 1.2 libraries from the Business Process Diagram solution, the Swim Lanes library from the Business Process Mapping solution as the perfect basis for your Swim Lane Flowcharts of processes, algorithms and procedures.Swim Lane Flowchart Symbols
Picture: Swim Lane Flowchart Symbols
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Unified Modeling Language (UML) is a graphical modeling language for describing, visualizing, projecting and documenting of object oriented systems. UML digram is used for modeling of organizations and their business processes, for development the big projects, the complex software applications. Comprehensive UML diagram allows to create the set of interrelated documents that gives the complete visual representation of the modeling system.uml sample project
Picture: UML Sample Project
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Cross-Functional Flowchart

There are many tools to manage a process or to illustrate an algorithm or a workflow. Flowcharting is one of those tools. However, it may be difficult to show complex processes that require multiple attributes or several people in a simple flowchart, so a cross-functional flowchart would be a solution for that situation. To create such flowchart, group processes and steps to labeled rows or columns, and divide those groups with horizontal or vertical parallel lines. It is worth mentioning that there are different types of cross-functional flowcharts, like opportunity or deployment flowchart. This diagram shows a cross-functional flowchart that was made for a trading process. It contains 14 processes, distributed through 5 lines depicting the participants who interact with the process. Also there are connectors that show the data flow of information between processes. The cross-functional flowchart displays a detailed model of the trading process, as well as all participants in the process and how they interact with each other. The lines in the flowchart indicates the position, department and role of the trading process participants.Cross-Functional Flowchart. flowchart maker
Picture: Cross-Functional Flowchart
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