UML: Collaboration Diagram

From http://www.umlonline.org/school/thread-38-1-1.html

For uml1.1, the English name of the Collaboration diagram is collaboration digoal. For uml2.0, the English name is communication digoal.
The Chinese Translation of collaboration digoal is a collaboration diagram, and the Chinese translation of communication digoal is a communication diagram. Here we will call it a collaboration diagram.

If you understand the sequence diagram, it is easy to understand the collaboration diagram. The collaboration diagram is another form of the sequence diagram. The customer's money withdrawal process from the ATM is shown in a sequence diagram as follows:

If it is represented by a collaboration diagram, it is as follows:

The sequence diagram emphasizes the order, while the collaboration diagram emphasizes the relationship between them.
Sequence diagrams can draw cycles and branch structures, while cooperative diagrams cannot.
In actual work, I often use more sequence diagrams. You can decide whether to use a sequence diagram or a collaboration Diagram Based on your actual needs.

UML: Collaboration Diagram