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Diagram Types in Software Engineering
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Diagram Types in Software Engineering

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Questions and Answers

Which diagram represents the functional characteristics of a system?

  • State Transition Diagram
  • Data-Flow Diagram (correct)
  • UML: Use Case Diagram
  • Entity–Relationship Diagram
  • Which diagram is used to model the behavioural aspects of a system?

  • Structure Diagram (Jackson)
  • Statechart (correct)
  • UML: Class Diagram
  • UML: Activity Diagram
  • Which diagram represents the static relationships between design entities?

  • UML: Activity Diagram
  • UML: Use Case Diagram
  • Statechart
  • UML: Class Diagram (correct)
  • Which diagram is used to model the interactions between a system and other 'actors'?

    <p>UML: Use Case Diagram</p> Signup and view all the answers

    Which diagram is used to represent the synchronization and coordination of system activities?

    <p>UML: Activity Diagram</p> Signup and view all the answers

    What is the primary purpose of a black box notation in software design modeling?

    <p>To describe the external properties and behavior of an element</p> Signup and view all the answers

    Which diagram is described as being more concerned with 'structure' and less explicitly related to any one viewpoint?

    <p>Jackson Structure Diagram</p> Signup and view all the answers

    Which diagram is related to an architectural style focused on transaction-based forms?

    <p>Entity-Relationship Diagram (ERD)</p> Signup and view all the answers

    What is the primary purpose of a Data Flow Diagram (DFD)?

    <p>To provide a problem-oriented view of the system and emphasize data dependencies</p> Signup and view all the answers

    Which component of a DFD represents an external source or sink of information?

    <p>The box</p> Signup and view all the answers

    Which statement about DFDs is true?

    <p>DFDs predate the computer era and are effective for describing processes</p> Signup and view all the answers

    What is De Marco's distinction regarding DFDs?

    <p>Logical DFD: what is being done to data, Physical DFD: who is doing it</p> Signup and view all the answers

    Which statement about DFDs is false?

    <p>DFDs are concerned with the control logic of the system</p> Signup and view all the answers

    What is a potential drawback of using DFDs?

    <p>Changes at one level can cause inconsistencies with other levels</p> Signup and view all the answers

    Study Notes

    System Modeling Diagrams

    • Use Case Diagram: represents the interactions between a system and other 'actors'

    System Design Diagrams

    • State Machine Diagram: used to model the behavioral aspects of a system
    • Class Diagram: represents the static relationships between design entities
    • Sequence Diagram: used to represent the synchronization and coordination of system activities

    Notations and Diagrams

    • Black Box Notation: primary purpose is to model a system without considering its internal workings
    • Composite Structure Diagram: described as being more concerned with 'structure' and less explicitly related to any one viewpoint
    • Architecture Style Diagram: related to an architectural style focused on transaction-based forms, such as Client-Server architecture

    Data Flow Diagrams (DFDs)

    • Primary Purpose: to model the flow of data through a system
    • External Entities: components that represent an external source or sink of information
    • True Statement: DFDs can be used to model systems at different levels of abstraction
    • De Marco's Distinction: DFDs focus on the flow of data rather than the control flow of the system
    • False Statement: DFDs are only used to model the internal workings of a system
    • Potential Drawback: DFDs can become complex and difficult to understand for large systems

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    Description

    This quiz covers various types of diagrams commonly used in software engineering such as Data-Flow Diagram, Entity-Relationship Diagram, and UML diagrams like Class Diagram and Use Case Diagram. It also includes topics like State Transition Diagram and Structure Diagram.

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