Synchronization bars, which may also be called joint symbols, represent either two concurrent activities joining a single linear flow or a single flow branching out into concurrent activities. The outputs typically include conditional text describing the conditions in which the activity takes that direction. Decision SymbolĪ decision symbol, represented by a diamond shape, is a branch in the flow of activity that requires one input and at least two outputs. These arrows show the direction of the activity. Connector SymbolĬonnector symbols are also called control flows, and are also essential to creating an activity diagram. Activity SymbolĪctivity symbols are the most important part of the activity diagram - they represent the activities that make up the process. The start symbol is a filled black circle that indicates the beginning of the activity and is an essential element of an activity diagram. What symbols will you need to use when you create your activity diagram? Here are the most important ones to know. During planning it helps to visualize the workflows and demonstrate the logic of the algorithm and during requirements gathering can be used for representing the different use cases of a system.Īlthough activity diagrams are similar to flowcharts, they have more detailed notation and elements that make them a better fit for technical projects. They are useful throughout different stages of developing a system.
Like many other UML diagrams, they simplify complex systems and are a valuable addition to documentation. What Are the Benefits of Activity Diagrams?Īctivity diagrams are the best method of communication for system flows and technical processes.
ACTIVITY DIAGRAM DATA STORE SOFTWARE
They are used to model software systems during the planning and implementation process or business requirements as part of business process modeling. These types all show the behavior of a modeled system.Īctivity diagrams also have similarities in function with data flow diagrams. They are further categorized as a type of behavior diagram, along with use case diagrams and state machine diagrams. They’re one of the most popular types of UML diagrams because of their similarities with a simple flowchart. An activity diagram is a visual description of the flow of one activity to another as part of a larger system or process.
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