Step 1: Figure out the action steps from the use case
In each of these cases, here’s how to draw an activity diagram from the beginning. It makes it easy to read.Īctivity diagrams can be used to model business requirements, create a high-level view of a system’s functionalities, analyze use cases and for various other purposes.
Here are a few tips you can follow when using swimlanes. In activity diagrams swimlanes – also known as partitions – are used to represent or group actions carried out by different actors in a single thread. Used to add relevant comments to elements Used to represent that the signal is received Used to represent the action of sending a signal to an accepting activity Used to represent two inputs that merge into one output Used to represent a flow that may branch into two or more parallel flows Used to represent a conditional branch point with one input and multiple outputs Used to mark the end of a single control flow
Used to mark the end of all control flows within the activity Used to represent the path of objects moving through the activity Used to represent the flow of control from one action to the other Used to represent the executable sub-areas of an activity Used to represent the activities of the process Used to represent the starting point or the initial state of an activity Following are the commonly used activity diagram symbols with explanations. UML has specified a set of symbols and rules for drawing activity diagrams. They can be used to examine business processes in order to identify its flow and requirements. UML activity diagrams can also be used to depict a flow of events in a business process. It is a behavioral diagram that illustrates the flow of activities through a system. Scroll down to find Ī UML activity diagram helps to visualize a certain use case at a more detailed level.
In this activity diagram tutorial, we hope to cover everything you need to know about activity diagrams to learn and master it. And because they are a lot similar to flowcharts, they are generally more popular than other UML diagram types.
Activity diagrams can be used in all stages of software development and for various purposes.