Object Oriented System Analysis and Design OOSAD
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Questions and Answers

What is the primary purpose of identifying all inputs and outputs in the functional modeling process?

  • To prioritize system requirements
  • To understand the functional dependencies (correct)
  • To determine the project timeline
  • To establish the cost of the system

    • Which of the following is NOT a phase of the Structured Analysis/Structured Design (SASD) approach?

  • Data Flow Diagram Construction (correct)
  • Requirement Analysis and Specification
  • Implementation
  • Post-implementation Review

    • Which characteristic of Object-Oriented Analysis helps mitigate issues of data tampering?

  • Data hiding (correct)
  • Complexity management
  • Procedural programming
  • Functionality restriction

    • What is a disadvantage of Object-Oriented Analysis regarding functionality?

    <p>Functionality is confined within objects</p> Signup and view all the answers

    Which step comes first in the functional modeling process?

    <p>Identify all the inputs and outputs</p> Signup and view all the answers

    What allows Object-Oriented Analysis to effectively manage software complexity?

    <p>Principles of encapsulation and data hiding</p> Signup and view all the answers

    Which of the following is a key advantage of using Object-Oriented Analysis over Structured Analysis?

    <p>It allows for gradual system expansion</p> Signup and view all the answers

    What limitation does Object-Oriented Analysis face regarding object interaction?

    <p>It fails to show communication between objects easily</p> Signup and view all the answers

    What is the primary focus of object-oriented analysis and design (OOAD)?

    <p>A group of interacting objects</p> Signup and view all the answers

    What does an object in an object-oriented environment encapsulate?

    <p>Both data and functionality</p> Signup and view all the answers

    Which modeling language is mentioned as a common notation for OOAD?

    <p>Unified Modeling Language (UML)</p> Signup and view all the answers

    How does object-oriented development differ from traditional software development?

    <p>It focuses on discrete objects instead of functions.</p> Signup and view all the answers

    What advantage does object-oriented programming (OOP) provide over procedural programming?

    <p>It promotes modularity and reusability.</p> Signup and view all the answers

    What is a key feature of objects in an object-oriented environment?

    <p>Objects operate as sealed black boxes.</p> Signup and view all the answers

    What benefit does the object-oriented life cycle offer to system design?

    <p>It creates systems that are more flexible and reusable.</p> Signup and view all the answers

    What does the unified approach (UA) emphasize in software development?

    <p>Good development practices and seamless transitions</p> Signup and view all the answers

    What are the attributes of the Circle class?

    <p>x-coord, y-coord, and radius</p> Signup and view all the answers

    What operation changes the radius of the Circle instance?

    <p>scale()</p> Signup and view all the answers

    Which of the following best describes encapsulation?

    <p>Binding attributes and methods within a class</p> Signup and view all the answers

    How can data hiding be achieved in the Circle class?

    <p>By creating access methods</p> Signup and view all the answers

    Which method is used to retrieve values of the Circle's attributes?

    <p>getValues()</p> Signup and view all the answers

    If my_circle's radius 'a' is initially 4 and scale() is called with a factor of 2, what will be the value of 'a' after the operation?

    <p>8</p> Signup and view all the answers

    What is the purpose of the setValues() method in the Circle class?

    <p>To assign values to attributes</p> Signup and view all the answers

    Message passing in an application refers to what?

    <p>Objects interacting with each other</p> Signup and view all the answers

    What type of relationship exists between a Bank and its Branches?

    <p>Composition, one-to-many</p> Signup and view all the answers

    How many accounts can a customer hold?

    <p>Only one of each type</p> Signup and view all the answers

    What is the nature of the relationship between Branch and Loans?

    <p>One-to-many aggregation</p> Signup and view all the answers

    What does an object diagram primarily illustrate?

    <p>Instances of objects and their links at a specific time</p> Signup and view all the answers

    What is a primary function of component diagrams?

    <p>They show the organization and dependencies among components.</p> Signup and view all the answers

    What type of account can a customer have according to the banking system rules?

    <p>One savings account and one current account</p> Signup and view all the answers

    Which of the following diagrams emphasizes the configuration of runtime processing nodes?

    <p>Deployment diagram</p> Signup and view all the answers

    In the system, how many loans can a customer obtain?

    <p>As many as they want</p> Signup and view all the answers

    What is a key characteristic of object-oriented programming?

    <p>It uses a modular approach with classes and objects.</p> Signup and view all the answers

    Which principle is NOT commonly associated with object-oriented analysis?

    <p>Linear programming</p> Signup and view all the answers

    What is a primary benefit of using the object model in software design?

    <p>Improved organization of code through encapsulation.</p> Signup and view all the answers

    What differentiates the object-oriented paradigm from the structured programming paradigm?

    <p>Object-oriented programming focuses on integrating data and functions.</p> Signup and view all the answers

    What does encapsulation in object-oriented design primarily refer to?

    <p>Hiding the internal state and only exposing necessary parts.</p> Signup and view all the answers

    Why might an organization choose to implement object-oriented analysis and design?

    <p>It allows for easier maintenance and evolution of software.</p> Signup and view all the answers

    Which is a consequence of using the object-oriented paradigm in software development?

    <p>Increased code reusability through inheritance.</p> Signup and view all the answers

    What is NOT a benefit associated with the object-oriented paradigm?

    <p>Creates dependencies on global variables.</p> Signup and view all the answers

    Study Notes

    Object-Oriented System Analysis and Design (OOSAD)

    • OOSAD integrates object-oriented concepts to analyze and design software systems efficiently.
    • Key components include object-oriented analysis (OOA) and object-oriented design (OOD).

    Object-Oriented Concepts

    • The approach models systems using interacting objects, representing real-world entities.
    • Each object is characterized by its class, state (data elements), and behavior (methods).

    History and Principles

    • Object-oriented principles emerged to improve software complexity management.
    • Essential concepts: encapsulation, data hiding, modularity, and reusability.

    Object Model

    • An object-oriented environment focuses on discrete objects encapsulating data and functionality.
    • Encourages viewing a system as cooperative agents, enhancing flexibility and robustness.
    • Supports a seamless transition among software development phases and good development practices.

    Object-Oriented Programming (OOP)

    • OOP utilizes objects to encapsulate both data (attributes) and methods (functions).
    • Example class: Circle with attributes for coordinates and radius, and methods for area and circumference calculations.

    Encapsulation and Data Hiding

    • Encapsulation binds attributes and methods within a class, hiding internal details from outside access.
    • Data hiding restricts data access to class methods, preventing direct outside interference.

    Message Passing

    • Objects within an application interact harmoniously, allowing for complex systems like banking to be modeled.
    • Examples include classes like Bank, Branch, Account, and relationships defining how they interact.

    Functional Model

    • Defines processes within an object, resembling data flow diagrams from structured analysis.
    • Steps include identifying inputs/outputs, constructing dependency diagrams, stating function purposes, and identifying constraints.

    Structured vs. Object-Oriented Analysis

    • Traditional Structured Analysis/Structured Design (SASD) employs a waterfall model with phases such as feasibility study, requirement analysis, design, implementation, and post-implementation review.
    • Object-oriented analysis focuses on data rather than procedures, which can limit functionality in computational systems.

    Advantages and Disadvantages of Object-Oriented Analysis

    • Advantages:
      • Enhances software complexity management through modularity.
      • Encourages system design upgrades from small to large scales.
    • Disadvantages:
      • Restricted functionality within encapsulated objects.
      • Communication between objects can be complex to visualize.

    Object Diagrams and Component Diagrams

    • Object diagrams model instances of objects at a specific time, illustrating their relationships.
    • Component diagrams depict the organization and dependencies of components, used for system construction and modeling behaviors.

    Deployment Diagram

    • Focuses on runtime processing nodes and their configurations.
    • Comprises nodes and dependencies, essential for understanding system architecture during operation.

    Unified Modeling Language (UML)

    • A key notation for representing models in object-oriented analysis and design, facilitating better understanding and communication among stakeholders.

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    Related Documents

    Revised-OOSAD-Module2020.pdf

    Description

    This quiz focuses on the core concepts of Object Oriented System Analysis and Design. It covers foundational principles essential for understanding OOSAD, suitable for students in information systems. The content is designed to enhance comprehension and application of OOSAD methodologies.

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