UML Collaboration Diagram Introduction

Object-oriented dynamic modeling, four diagrams of behavior interaction between entities, State diagrams (Stage Diagram), Sequence diagrams (Sequence Diagram), activities (activity Diagram) in front of the blog, we have learned, Today we are going to study the collaboration diagram (Sequence Diagram). The collaboration diagram and the sequence diagram we've studied earlier are all interactive diagrams that emphasize the organization of the objects that send and receive messages.

In the context of system architecture, collaboration includes both static and dynamic concept block naming, the association as a class, interface and its elements of the group named, they work together to provide more than the sum of the total of the more cooperative behavior. Next, let's take a look at the overall overview of this knowledge point:

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First, we need to be clear about the basic concepts of collaboration diagrams and the role of collaboration diagrams:

Understanding these basics, helping to strengthen our understanding of collaboration diagrams, figuring out what the collaboration diagram is capable of, and being able to be an invincible position in the great family of UML, let's take a look at the components of the collaboration diagram and the steps to create a collaboration diagram:

Through the previous study we know that sequence diagrams and collaboration diagrams are collectively referred to as interaction diagrams, in which sequence diagrams describe the order in which messages are sent between objects, the interaction between objects, and the events that occur at a specific moment in the execution of the system, and the collaboration diagram emphasizes the organizational structure of the objects that send and receive messages. So what happens when a sequence diagram meets a collaboration diagram: