The sequence in which the messages are flowing.įollowing are two interaction diagrams modeling the order management system. Organization of objects in a system taking part in the message flow.įollowing things are to be identified clearly before drawing the interaction diagram The message flow from one object to another and the collaboration diagram describes the The sequence diagram captures the time sequence of We have two types of interaction diagrams in UML. Snapshot of the running system at a particular moment So to capture the dynamic aspect, we need to understand what a dynamic aspect is and how it is visualized. To describe the interaction among objects.Īs we have already discussed, the purpose of interaction diagrams is to capture the dynamic aspect of a system. To describe the structural organization of the objects. To describe the message flow in the system. To capture the dynamic behaviour of a system. Sequence and collaboration diagrams are used to capture the dynamic nature but from a different angle. Hence, the solution is to use different types of models to capture the different aspects of the interaction. Visualizing the interaction is a difficult task. The purpose of interaction diagrams is to visualize the interactive behavior of the system. Sequence diagram emphasizes on time sequence of messages and collaboration diagram emphasizes on the structural organization of the objects that send and receive messages. The basic purpose of both the diagrams are similar. This interactive behavior is represented in UML by two diagrams known as Sequence diagram and Collaboration diagram. This interaction is a part of dynamic behavior of the system. From the term Interaction, it is clear that the diagram is used to describe some type of interactions among the different elements in the model.
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