UML is extremely beneficial for visualizing and also documenting software systems, yet the terminology deserve to be rather overwhelming for someone unfamiliar through UML. An task diagram is essentially a flowchart that shows tasks performed through a system. If you're new to UML diagramming software, this guide will aid you acquire started.

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The unified Modeling Language contains several subsets that diagrams, including structure diagrams, interaction diagrams, and behavior diagrams. Activity diagrams, along with use case and also state machine diagrams, room considered actions diagrams since they describe what must happen in the mechanism being modeled.

Stakeholders have actually many problems to manage, so it's essential to communicate with clarity and brevity. Activity diagrams aid people on the business and development sides that an organization come together to understand the same process and behavior. You'll use a collection of devoted symbols—including those supplied for starting, ending, merging, or receiving actions in the flow—to do an task diagram, which we’ll cover in more depth within this task diagram guide.

Activity diagrams existing a number of benefits to users. Consider creating an task diagram to:

Demonstrate the logic of an algorithm.

Describe the steps performed in a UML use case.

Illustrate a business process or workflow between users and also the system.

Simplify and improve any procedure by clarifying complicated use cases.

Model software architecture elements, such together method, function, and also operation.

Before you begin making an activity diagram, friend should an initial understand the makeup. Some of the most common components that an task diagram include:

Action: A step in the task wherein the individuals or software perform a offered task. In, actions space symbolized with round-edged rectangles.

Decision node: A conditional branch in the flow that is stood for by a diamond. It contains a single input and two or an ext outputs.

Control flows: Another surname for the connectors that present the flow between steps in the diagram.

Start node: Symbolizes the start of the activity. The begin node is stood for by a black circle.

End node: Represents the last step in the activity. The end node is represented by one outlined black color circle.

Diagramming is quick and easy through Start a cost-free trial this day to begin creating and also collaborating.

Create a UML Diagram

These task diagram shapes and also symbols are few of the many common types you'll find in UML diagrams.




Start symbol

Represents the start of a procedure or workflow in an task diagram. It deserve to be offered by itself or through a keep in mind symbol that describes the beginning point.


Activity symbol

Indicates the activities that comprise a modeled process. These symbols, which include quick descriptions in ~ the shape, room the main building blocks the an task diagram.


Connector symbol

Shows the directional flow, or regulate flow, the the activity. One incoming arrowhead starts a step of an activity; once the step is completed, the flow continues with the outgoing arrow.


Joint symbol/ Synchronization bar

Combines 2 concurrent activities and re-introduces them to a circulation where just one task occurs at a time. Represented with a thick upright or horizontal line.

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Fork symbol

Splits a single activity flow into 2 concurrent activities. Symbolized through multiple arrowed lines from a join. 

Decision symbol

Represents a decision and constantly has at least two routes branching the end with condition text to permit users to check out options. This symbol represents the branching or merger of miscellaneous flows with the prize acting together a structure or container.