SDLC Model Phases
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Questions and Answers

What is the primary advantage of a prototyping-based methodology?

  • It emphasizes continuous feedback
  • It provides a detailed analysis of the system
  • It builds an overall plan for the information system
  • It quickly provides a system with which users can interact (correct)

    • What is the focus of agile development?

  • Emphasizing continuous feedback only
  • Developing a system incrementally through prototypes (correct)
  • Building a detailed blueprint for the system
  • Analyzing the system's overall structure

    • What is the characteristic of the spiral model in agile development?

  • It represents a series of iterations, or revisions, based on user feedback (correct)
  • It represents a linear approach to system development
  • It emphasizes continuous feedback only
  • It builds a detailed plan for the system

    • What is the primary goal of structured analysis?

    <p>To build an overall plan for the information system</p> Signup and view all the answers

    What is the key difference between agile and structured analysis?

    <p>Agile emphasizes continuous feedback, while structured analysis builds a detailed plan</p> Signup and view all the answers

    What is the role of user feedback in agile development?

    <p>It is used to adjust the system incrementally</p> Signup and view all the answers

    What is a characteristic of a prototyping-based methodology?

    <p>It provides a quick-and-dirty program</p> Signup and view all the answers

    What is the main difference between agile and traditional development?

    <p>Agile develops a system incrementally, while traditional development builds a system linearly</p> Signup and view all the answers

    What is the primary focus of agile development?

    <p>Developing a system incrementally through prototypes</p> Signup and view all the answers

    What is the role of the spiral model in agile development?

    <p>It represents a series of iterations, or revisions, based on user feedback</p> Signup and view all the answers

    Study Notes

    SDLC Model

    • The SDLC model typically includes five stages:
    • The first stage is the system request, where a preliminary investigation is conducted to evaluate an IT-related business opportunity or problem.
    • A feasibility study is conducted to review anticipated costs and benefits.

    System Analysis

    • The system analysis phase is where the analyst investigates business processes and creates a logical model of the new system.
    • The deliverable for this phase is the system requirements document.

    System Design

    • The system design phase involves creating a physical model that satisfies all documented requirements.
    • The user interface is designed, and necessary outputs, inputs, and processes are identified.
    • The application architecture is determined.

    System Implementation

    • The system implementation phase aims to deliver a fully functioning and documented information system.
    • Final preparations include converting data to the new system's files.

    System Evaluation

    • The system evaluation phase determines whether the system operates properly and if costs and benefits are within expectations.

    System Maintenance

    • The system maintenance phase involves maintaining, enhancing, and protecting the system.
    • The objective is to maximize return on the IT investment (ROI).
    • A well-designed system must be secure, reliable, maintainable, and scalable.

    Waterfall Model

    • The waterfall model is easy to understand due to its simple linear structure.
    • It helps to define goals and deliverables at the early stage of the project.
    • Project management is simple and effective.
    • The model works effectively with smaller projects where the requirements are clearly defined.

    Object-Oriented Analysis

    • Object-oriented analysis represents actual people, things, transactions, and events as software objects.
    • Using an O-O programming language, a programmer writes the code that creates the objects.
    • O-O analysis combines data and processes into objects.

    Phasing and Prototyping Approach

    • RAD (Rapid Application Development) breaks an overall system into a series of versions that are developed sequentially.
    • The most important and fundamental requirements are bundled into the first version.
    • RAD-based methodologies recommend using special techniques such as computer-aided software engineering (CASE) tools and joint application design (JAD) sessions.

    Joint Application Design (JAD)

    • JAD focuses on team-based fact-finding, which is only one phase of the development process.
    • RAD is a compressed version of the entire process.

    Prototyping-Based Methodology

    • The key advantage is that it quickly provides a system with which the users can interact.
    • The basics of analysis and design are performed, and work immediately begins on a system prototype.

    Agile Development

    • Agile approach emphasizes continuous feedback, and each incremental step is affected by what was learned in the prior steps.
    • Agile methods develop a system incrementally, by building a series of prototypes and constantly adjusting them to user requirements.
    • Agile methods typically use a spiral model, which represents a series of iterations, or revisions, based on user feedback.

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    Description

    This quiz covers the different phases of the System Development Life Cycle (SDLC) model, including system implementation and support. Learn about the IT-related business requirements and the preliminary investigation process.

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