Sequence Diagram Basics
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Questions and Answers

What is the primary purpose of a sequence diagram?

  • To model the internal structure of a system
  • To describe the components of a system
  • To organize use cases by hierarchy
  • To show the sequence of interactions between objects (correct)
  • What do lifelines represent in a sequence diagram?

  • The classes and objects in a system
  • The states of an object over time
  • The interactions between objects
  • The timeline of an object's existence (correct)
  • What is the purpose of the vertical axis in a sequence diagram?

  • To model the flow of time (correct)
  • To represent the order of messages
  • To describe the class hierarchy
  • To show the relationships between objects
  • What do arrows in a sequence diagram typically represent?

    <p>Messages sent between objects</p> Signup and view all the answers

    What type of interactions do sequence diagrams focus on?

    <p>Behavioral interactions between objects</p> Signup and view all the answers

    Study Notes

    Sequence Diagrams

    • The primary purpose of a sequence diagram is to show the interactions between objects in a system, emphasizing the order of events and the communications between objects.

    Components of a Sequence Diagram

    • Lifelines in a sequence diagram represent the instances of classes, objects, or roles that participate in the interactions.

    Visual Representation

    • The vertical axis in a sequence diagram represents time, with the top of the diagram indicating the earliest events and the bottom indicating the latest events.

    Interaction Representation

    • Arrows in a sequence diagram typically represent the flow of messages, requests, or responses between objects, indicating the interactions and communications between them.

    Interaction Focus

    • Sequence diagrams focus on the dynamic interactions between objects, highlighting the sequence of events, the flow of control, and the data exchanged between objects.

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    Description

    Test your knowledge of sequence diagrams, including their purpose, lifelines, and interactions. Learn about the basics of sequence diagrams and how they are used in system design.

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