Sequence Chart-sequence digoal

A sequence chart is also called a sequence chart, which shows the interaction between objects. These objects are arranged in chronological order. The time sequence diagram emphasizes the order of message interaction between the objects involved in interaction and their objects.

The sequence chart is a timeline along the vertical line. The role uses a dotted line to indicate that the lifeline is a dual line when the object process is active.

The following is the sequence diagram I drew in the data center charging system:

General Users:

OPERATOR:

Recharge:

Administrator: