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Logical System Development Lifecycle
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Logical System Development Lifecycle

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@LuckiestOpArt

Questions and Answers

What is primarily evaluated during the Feasibility Study stage?

  • System architecture design
  • Integration testing procedures
  • Coding practices and standards
  • Theoretical foundation of the system (correct)

    • Which stage of the Waterfall model involves determining the hardware requirements?

  • Coding and Internal Testing
  • Requirements Analysis
  • Feasibility Study
  • System and Software Design (correct)

    • What is a primary method of data collection in the Requirements Analysis stage?

  • Hardware procurement
  • Questionnaires (correct)
  • System integration testing
  • Algorithmic design

    • During which stage of the Waterfall model is the cost-benefit analysis conducted?

    <p>Feasibility Study</p> Signup and view all the answers

    What does the Integration of the System and Testing the External Effectiveness stage focus on?

    <p>Verifying how the system interacts with external systems</p> Signup and view all the answers

    What key aspect is addressed during the System and Software Design stage?

    <p>Specification and translation into software representation</p> Signup and view all the answers

    Which of the following best describes the role of data structure in the System and Software Design stage?

    <p>It outlines the organization and storage of data.</p> Signup and view all the answers

    What is the main goal of the Requirements Analysis stage?

    <p>To specify the problem and desired objectives.</p> Signup and view all the answers

    What is a drawback of the Prototyping Model?

    <p>It may lead to poorly designed systems due to rapid development.</p> Signup and view all the answers

    In the context of Rogers’ Model, what does a 'Phase' refer to?

    <p>A broad set of related tasks.</p> Signup and view all the answers

    What is established during the Project Planning phase of Rogers’ Model?

    <p>The project's purpose and scope.</p> Signup and view all the answers

    Which of the following describes a Checkpoint in Rogers’ Model?

    <p>A defined outcome signifying the completion of a phase or task.</p> Signup and view all the answers

    What is the main focus during the Requirements Analysis phase?

    <p>To determine 'what' the product is to do.</p> Signup and view all the answers

    What is the result of effective management in the Prototyping Model?

    <p>Better control over the scope and quality of the project.</p> Signup and view all the answers

    What does a Logical Design primarily focus on in the System Design phase?

    <p>The functional requirements independent of physical constraints.</p> Signup and view all the answers

    Why might prototyping continue for longer than intended in complex systems?

    <p>There are no well-defined criteria for completion.</p> Signup and view all the answers

    What is the primary function of a Database Management System (DBMS)?

    <p>To serve as an interface between application programs and coordinated physical files</p> Signup and view all the answers

    Which type of database contains data about a specific organizational function?

    <p>Functional database</p> Signup and view all the answers

    Which of the following is NOT an advantage of using a DBMS?

    <p>Increased hardware costs</p> Signup and view all the answers

    How does a DBMS contribute to data security?

    <p>By clearly defining responsibilities and involving a system administrator</p> Signup and view all the answers

    What is the primary purpose of a telecommunications network?

    <p>To transmit data between devices across various locations</p> Signup and view all the answers

    What is one benefit of a telecommunications network in an organization?

    <p>Support for organizational decision-making processes</p> Signup and view all the answers

    Which of the following describes the function of query language in a DBMS?

    <p>It allows users to interact with the database effectively</p> Signup and view all the answers

    Which statement is false regarding subject and functional databases?

    <p>Subject databases are only for a single department</p> Signup and view all the answers

    What is the main goal of the Requirements Analysis Phase?

    <p>To formally define functional user requirements that are measurable and testable</p> Signup and view all the answers

    Which of the following is true during the Design Phase?

    <p>Subsystems are identified and detailed logic specifications are prepared</p> Signup and view all the answers

    What occurs in the Development Phase?

    <p>Unit testing of software is performed in a systematic manner</p> Signup and view all the answers

    During which phase is effective communication between users and developers critical?

    <p>Requirements Analysis Phase</p> Signup and view all the answers

    What happens in the Integration and Test Phase?

    <p>System components are integrated and tested for functional requirements</p> Signup and view all the answers

    What must be documented and reviewed by the user during the Design Phase?

    <p>Subsystem partitions and detailed design logic</p> Signup and view all the answers

    In which stage are system performance and maintainability explicitly defined?

    <p>Requirements Analysis Phase</p> Signup and view all the answers

    What is a primary focus of the Integration and Test Phase?

    <p>Ensuring the system operates within a real-world environment</p> Signup and view all the answers

    What is the primary purpose of a Database Management System (DBMS)?

    <p>To store and manage a database</p> Signup and view all the answers

    Which of the following is a disadvantage of the Traditional Approach for Information Systems (TAIS)?

    <p>Data redundancy</p> Signup and view all the answers

    What problem does a lack of integration in TAIS primarily create?

    <p>Isolated data sets</p> Signup and view all the answers

    Which of the following are considered scheduled reports in the context of TAIS?

    <p>Reports that are previously determined</p> Signup and view all the answers

    In the context of TAIS, what does 'program/data dependence' refer to?

    <p>Data related to functions is stored separately</p> Signup and view all the answers

    What is a common characteristic of data stored in a registration database?

    <p>Variety of categories such as names and courses</p> Signup and view all the answers

    What aspect of TAIS reduces its responsiveness to changing business environments?

    <p>Reliance on scheduled reports</p> Signup and view all the answers

    What is a significant drawback of storing identical data in multiple files within TAIS?

    <p>Reduced system effectiveness</p> Signup and view all the answers

    Study Notes

    Waterfall Model

    • First structured approach for system development, presented as a time-ordered list of necessary activities.
    • Stages include:
      • Feasibility study
      • Requirements analysis
      • System and software design
      • Coding and internal testing
      • Integration and external effectiveness testing
      • Maintenance

    Feasibility Study

    • Theoretical investigation assessing:
      • Necessity and objectives of the system.
      • Potential funding sources.
      • Added value and enhancements to the current system.
      • Cost-benefit analysis.

    Requirements Analysis

    • Specifies the problem, desired objectives, and constraints.
    • Explores relationships between system components.
    • Essential data collection methods include:
      • Questionnaires
      • Interviews
      • Observations
      • Documentary analysis

    System and Software Design

    • Translates specifications into software representation.
    • Main focuses:
      • Data structure and software architecture.
      • Detailed algorithms and interface representations.
    • Hardware requirements identified alongside overall system architecture.
    • Prototyping may help train future users early.

    Drawbacks of Prototyping

    • Rapid development can lead to poorly designed systems.
    • May lack global consideration of all components in complex designs.
    • Effective process management is critical to avoid extended prototyping duration.

    Rogers’ Model

    • Key elements include phases, tasks, and checkpoints (milestones) to track progress.
    • Phases outline broad tasks, while specific tasks have defined purposes.

    Stages of Rogers’ Model

    • Project Planning:

      • Defines project purpose, scope, stakeholders, and cost/benefit analysis.
      • Checkpoint: Terms of Reference and Project Plan agreed upon.

    • Requirements Analysis:

      • Establishes what the product should do.
      • Checkpoint: Agreed System Requirements Statement.

    • System Design:

      • Details how the product performs defined functions.
      • Checkpoint: System Design Specification, including logical and physical design.

    Design Phase

    • Defines physical construction, operating environment, major subsystems, and processes.
    • Requires user input and documentation at every step.
    • Detailed logic specifications for each software module are developed.

    Development Phase

    • Translates detailed specifications into actual hardware, communications, and executable software.
    • Involves systematic unit testing, integration, and retesting of components.

    Integration and Test Phase

    • Assembles hardware, ensuring the system operates effectively in real-world scenarios.
    • User tests confirm satisfaction of functional requirements.

    Database Management System (DBMS)

    • Software designed to store and manage large data sets, e.g., student information in registration databases.
    • Enables structured, efficient data management and retrieval.

    Traditional Approach for Information Systems (TAIS)

    • A file-oriented method with several disadvantages:
      • Data redundancy increases costs and system inefficiency.
      • Lack of data integration hinders interrelations.
      • Programs/data dependence complicates data management.
      • Limited flexibility due to pre-scheduled reporting.

    Advantages of DBMS

    • Elimination of data redundancy and improved data/program independence.
    • Effective user interface via query language.
    • Enhanced system security through administrative controls.

    Network Fundamentals

    • Systems interconnect computers and equipment for electronic communication.
    • Benefits include:
      • Improved response time and decision-making.
      • Facilitated data flow across organizations.
      • Enabled strategic alliances through networks.

    Telecommunications Network

    • Involves data transmission between devices at different locations.
    • Important for various business applications, enhancing communication efficiency.

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    Quiz Team

    Description

    This quiz covers the stages of the Waterfall model, the first structured approach to system development. Explore activities such as feasibility study, requirements analysis, and system design, focusing on how these stages interconnect in the development lifecycle.

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