Activity Diagram Object Flow

An object flow is shown as a connector with an arrowhead denoting the direction the object is being passed.

Activity diagram object flow. It describes the system activities or the person who does the activity and the sequential flow of these activities. They can also describe the steps in a use case diagram. This diagram depicts a simple object flow between two actions fill order and ship order both accessing order information. An object flow is a path along which objects or data can pass.

This explicit portrayal of the data object order connected to the activities by two object flows can be refined by using this format. Common usages of an activity diagram in sysml includes. Activities modeled can be sequential and concurrent. Activity diagram is similar to a business work flow diagram or simply a flowchart with much richer semantics.

Thus it is typically used to specify behavior with a focus on the flow of control and the transformation of inputs into outputs through a sequence of actions. Here action pins are used to reflect the order. The actions coordinated by activity models can be initiated because other actions finish executing because objects and data become available or because some events external to the flow occur. Activity diagram is basically a flowchart to represent the flow from one activity to another activity.

An object is shown as a rectangle. Activity diagrams are often used in business process modeling. This flow can be sequential branched or concurrent. The activity can be described as an operation of the system.

An object flow must have an object on at least one of its ends. In activity diagrams there are several ways to define the flow of data between objects. The control flow is drawn from one operation to another. An activity diagram visually presents a series of actions or flow of control in a system similar to a flowchart or a data flow diagram.

An activity diagram is particularly good at expressing the flow of objects matter energy or data through a behavior with a focus on how the objects can be accessed and modified in the execution of that behavior during system operation. Here is a detailed article on uml activity diagrams.