sequence diagram for online shopping system pdf

You can find more symbols in the symbol libraries. Step 3: All the symbols for drawing a system sequence diagram are on the left panel.

Or you can select one of the templates from the gallery. Here you can choose to open a blank drawing page to start from scratch. Alternatively, you can use EdrawMax Online to create diagrams instantly. Step 1: Download and install EdrawMax on your PC. These lines start from the rectangle shape o with an actor. The dashed lines aka, the lifelines, are the events in the system sequence diagram. These events are generated in a sequence or a specific order. Then with the specific event, the system performs the specific task. The interaction or communication of an actor or system to the system is an event. They are the stick-like figures in the diagram. The interaction can be like interacting with the cashier, customer retrieving amount from the ATM or anything.

These are the external entities that interact with our system, and the system is created by keeping actors in mind. The black box is a system that is not illuminated to the outside world because they contain inner processes. In a traditional UML, the box depicting a title represents the class or an object but, in System Sequence Diagram, this shape represents the system as the black-box. The essential elements of the system sequence diagram are. Some of the elements that are used in the use case diagram are also as follows here.

Sequence diagram for online shopping system pdf