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Sequence Diagram for the Elevator System

Explore how to design sequence diagrams for elevator system interactions including calling and riding the elevator. Understand the flow between passengers, elevator components, and control systems to visualize system behavior and prepare for object-oriented design interviews.

A sequence diagram is a great way to understand the interactions between different entities and objects in the system. There can be different sequence diagrams that we can create for our elevator system. In this lesson, we will create sequence diagrams for the following two interactions:

  • Elevator call: The passenger calls the elevator.

  • Sequence challenge: The passenger rides the elevator to a floor.

Elevator call

The sequence diagram for an elevator ...