Introduction to UML sequence diagram

Sequence diagram, English name Yue: Sequence Diagram, also known as sequence diagrams and sequence diagrams, is a behavioral graph, which shows the dynamic collaboration between multiple objects by describing the chronological order in which messages are sent between objects. She can represent the order in which the use cases are performed, and when a routine is executed, each message in the sequence diagram corresponds to a class action or trigger event that causes a transformation for the state machine.

Sequence diagrams describe how objects interact and focus on message sequences, that is, describe how messages are sent and received between objects. Today we are going to learn about the sequence diagram, first of all, let's take a look at the outline of the whole chapter:

URL Address: http://www.bianceng.cn/Programming/project/201602/49609.htm

Now, let's take a look at the overview of the sequence diagram and the composition of the sequence diagram:

With a general idea of the basics, let's take a look at the creation and revocation of objects and the modeling techniques for sequential graphs:

The basic knowledge of the sequence diagram, we will introduce here, next, we give an example, describe the diner, the service student and the chef's sequence diagram, specifically explain the application of sequence diagram: