System Modeling Chapter 5
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Questions and Answers

What is the primary goal of model-driven engineering?

  • To automate the transformation of models to code (correct)
  • To support an iterative approach to development
  • To create a platform-independent model
  • To reduce the number of model types

    • What is the name of the subset of UML 2 that enables automated transformation of models to code?

  • Domain-specific UML
  • Platform-independent UML
  • Agile UML
  • Executable UML (correct)

    • What type of model identifies the principal concerns in a system?

  • State model
  • Domain model (correct)
  • Class model
  • Platform-specific model

    • What is associated with each class in a state model?

    <p>A state diagram</p> Signup and view all the answers

    What is the primary benefit of using MDA in an agile development process?

    <p>Reducing the need for coding</p> Signup and view all the answers

    What is the main difference between a platform-independent model and a platform-specific model?

    <p>The target application platform</p> Signup and view all the answers

    What is the purpose of a class model in Executable UML?

    <p>To define the attributes and operations of a class</p> Signup and view all the answers

    What is the primary challenge of using MDA in agile development?

    <p>The need for extensive up-front modeling</p> Signup and view all the answers

    What is the relationship between a domain model and a class model in Executable UML?

    <p>A domain model is used to identify the principal concerns, while a class model is used to define the attributes and operations</p> Signup and view all the answers

    What is the primary benefit of using Executable UML?

    <p>Automation of model transformations</p> Signup and view all the answers

    Study Notes

    System Modeling

    • Data-driven modeling is used for systems that are primarily driven by data, showing the sequence of actions involved in processing input data and generating associated output.
    • Event-driven modeling shows how a system responds to external and internal events, assuming a finite number of states and transitions between them.
    • State machine models show system states as nodes and events as arcs between these nodes, used for modeling real-time systems.

    State Machine Models

    • State charts are used to represent state machine models and are an integral part of the UML.
    • State machine models show system responses to stimuli, often used for modeling real-time systems.

    Microwave Oven Example

    • The microwave oven's operation can be modeled using a state machine, showing states such as Waiting, Half power, Full power, Set time, Disabled, Enabled, and Operation.
    • Stimuli for the microwave oven include Half power, Full power, Timer, Number, Door open, Door closed, Start, and Cancel.

    Model-Driven Engineering

    • Model-driven engineering (MDE) is an approach to software development where models are the principal outputs of the development process.
    • Platform-specific models (PSM) are transformations of the platform-independent model, with each PSM adding platform-specific detail.

    MDA Transformations

    • MDA transformations allow for the creation of multiple platform-specific models from a single platform-independent model.

    Agile Methods and MDA

    • Model-driven engineering (MDE) is intended to support an iterative approach to development and can be used within agile methods.
    • However, the notion of extensive up-front modeling contradicts the fundamental ideas in the agile manifesto.

    Executable UML

    • Executable UML (xUML) is a subset of UML 2 that allows for completely automated transformation of models to code.
    • Features of xUML include:
    • Domain models that identify principal concerns in a system using UML class diagrams.
    • Class models that define classes, attributes, and operations.
    • State models that describe the life cycle of classes using state diagrams.

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    Description

    This quiz covers system modeling, specifically data-driven modeling and its applications in business systems.

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