Activity Diagram Object Flow
Object flow is a path along which objects or data can pass.
Activity diagram object flow. An object is shown as a rectangle. 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. Activity diagram is uml behavior diagram which shows flow of control or object flow with emphasis on the sequence and conditions of the flow. Common usages of an activity diagram in sysml includes.
In activity diagrams there are several ways to define the flow of data between objects. 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. 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. The control flow is drawn from one operation to another.
The activity can be described as an operation of the system. This explicit portrayal of the data object order connected to the activities by two object flows can be refined by using this format. Here action pins are used to reflect the order. Here is a detailed article on uml activity diagrams.
An object flow must have an object on at least one of its ends. This diagram depicts a simple object flow between two actions fill order and ship order both accessing order information. Activity diagrams are often used in business process modeling. An object flow is shown as a connector with an arrowhead denoting the direction the object is being passed.
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. See uml superstructure specification v2 1 1 figure 12 110 p 391. An object flow is a path along which objects or data can pass. They can also describe the steps in a use case diagram.
Activity diagram is basically a flowchart to represent the flow from one activity to another activity. It describes the system activities or the person who does the activity and the sequential flow of these activities.