Object-Oriented System Development
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Questions and Answers

What is the main goal of object-oriented system development?

  • To create databases
  • To develop operating systems
  • To create simple IT systems
  • To support the creation, enhancement, and maintenance of complex enterprise IT systems (correct)

What is the main perspective of object orientation?

  • Viewing systems as a set of programming languages
  • Viewing systems as a collection of processes
  • Viewing systems as a network of databases
  • Viewing systems as an interaction of abstract or real entities (correct)

What is NOT true about object orientation?

  • It is a view of complex systems
  • It is a programming language (correct)
  • It is a process model
  • It is an approach to support complex system development

When did the widespread acceptance of object orientation in industrial applications begin?

<p>In the early 1990s (C)</p> Signup and view all the answers

What is the role of Ms. Koch in the case study?

<p>Developer programming an online shop (B)</p> Signup and view all the answers

What type of systems does object orientation support?

<p>Only complex enterprise IT systems (B)</p> Signup and view all the answers

What is the name of the customer in the case study?

<p>Mr. Lange (A)</p> Signup and view all the answers

What is the purpose of the object-oriented approach?

<p>To support the development of complex systems (A)</p> Signup and view all the answers

What is the name of the object created in the example scenario?

<p>Digital Clock (D)</p> Signup and view all the answers

What is the primary goal of the object-oriented analysis phase?

<p>To gain a comprehensive understanding of the functional relationships within the system (D)</p> Signup and view all the answers

What is the result of the object-oriented design phase?

<p>A technical design of the system (B)</p> Signup and view all the answers

What is the purpose of the system architecture in the object-oriented development process?

<p>To define the rough structure of the system (B)</p> Signup and view all the answers

What is the primary goal of the object-oriented programming phase?

<p>To develop functional program code (A)</p> Signup and view all the answers

What is the outcome of the software development process?

<p>A functional system (A)</p> Signup and view all the answers

What is the role of the system architect in the object-oriented development process?

<p>To define the rough structure of the system (C)</p> Signup and view all the answers

What is the purpose of the analysis model in the object-oriented development process?

<p>To act as a means of communication between the developers and the client (B)</p> Signup and view all the answers

What is a major factor that contributes to the growth of the number of lines of program code in enterprise IT systems?

<p>The ongoing development and adaptation of applications to meet business and technical trends (C)</p> Signup and view all the answers

What is the primary purpose of attributes in an object?

<p>To store and protect information (B)</p> Signup and view all the answers

What is the primary characteristic of object-oriented programming?

<p>The development of programs consisting of cooperating objects (A)</p> Signup and view all the answers

What is the primary advantage of using object-oriented programming for large industrial software systems?

<p>It facilitates the development of complex systems consisting of cooperating objects (B)</p> Signup and view all the answers

What is the primary purpose of methods in an object?

<p>To create, read, change, and perform calculations on attribute values (D)</p> Signup and view all the answers

What is the principle that dictates that an object's attributes cannot be directly changed by other objects?

<p>Data encapsulation (C)</p> Signup and view all the answers

What is the primary advantage of using model-driven development approaches?

<p>It allows for the reuse of previously programmed functions (B)</p> Signup and view all the answers

What is the primary characteristic of structured programming?

<p>The structuring of a program into procedures and subprocedures (C)</p> Signup and view all the answers

What is the primary risk if programmers fail to adhere to the system specifications?

<p>Design decisions will not be implemented appropriately (D)</p> Signup and view all the answers

What is the primary goal of analysis in developing an online shop?

<p>To understand the business activities and processes involved (B)</p> Signup and view all the answers

What is the focus of the technical design of an online shop?

<p>The technical objects and their cooperation (B)</p> Signup and view all the answers

What is the primary advantage of object-oriented system development?

<p>It leads to fewer problems in scaling, stability, and extensibility (D)</p> Signup and view all the answers

What is the main concept of object orientation in software development?

<p>Considering complex systems as an interaction of cooperating objects (A)</p> Signup and view all the answers

What does the coffee machine example demonstrate?

<p>How object orientation affects the viewing of technical systems (A)</p> Signup and view all the answers

What is the effect of replacing the water tank with a direct connection to the drinking water network in the coffee machine example?

<p>The water pipe no longer cooperates with the tank, but instead with the drinking water supply (D)</p> Signup and view all the answers

What is the purpose of associating the clock object with the heating element in the extended coffee machine example?

<p>To control the heating element's function with the clock (D)</p> Signup and view all the answers

What is the primary purpose of encapsulation in object-oriented systems?

<p>To divide internal elements into areas with specific functions (C)</p> Signup and view all the answers

What is the main advantage of developing systems using object-oriented approach?

<p>It supports development, enhancement, and quality assurance (D)</p> Signup and view all the answers

According to the coffee machine example, what is the responsibility of the heating element?

<p>To convert electrical energy into heat (A)</p> Signup and view all the answers

What is the main benefit of using interfaces in object-oriented systems?

<p>To allow objects to interact with each other (D)</p> Signup and view all the answers

What is the goal of the object-oriented development process?

<p>To develop a system that meets the requirements of the client (C)</p> Signup and view all the answers

What happens when objects are interchanged or extended in an object-oriented system?

<p>Only the affected parts of the system need to be retested (C)</p> Signup and view all the answers

What is the main concept of object-oriented systems?

<p>The system is described as the interaction of cooperating objects (D)</p> Signup and view all the answers

What is the result of dividing systems into individual objects with specific responsibilities?

<p>It supports development, enhancement, and quality assurance (D)</p> Signup and view all the answers

Study Notes

Object-Oriented System Development

  • Object orientation is an approach in software technology that supports the development, enhancement, and maintenance of complex enterprise IT systems.
  • It views complex systems as an interaction of abstract or real entities, known as objects.

The Concept of Object

  • An object is a part of a software system.
  • An object can contain attributes and methods.
  • Attributes are used to store information, such as current values of variables, in an object.
  • Attributes of an object are hidden from direct access from other objects and are thus protected (principle of data encapsulation).
  • Methods are used to create, read, change, and perform calculations of the values of attributes.

Phases of Object-Oriented Development Process

  • Object-Oriented Analysis (OOA): determines what a system should do.
  • Object-Oriented Design (OOD): forms a bridge between the analysis and implementation.
  • Object-Oriented Programming (OOP): translates a system design into functioning program code.

Benefits of Object Orientation

  • Supports the creation, enhancement, and maintenance of complex enterprise IT systems.
  • Achieves quality goals such as simple extensibility, better testability, and better maintainability.

Example of Object Orientation: Digital Clock

  • A digital clock can be replicated as a digital object with attributes such as "current time" and "current time zone".
  • Methods of the digital clock object can include "set time", "output time", and "set time zone".

Example of Object Orientation: Coffee Machine

  • A coffee machine can be viewed as an interaction of cooperating objects, such as water tank, water pipe, non-return valve, heating element, hot plate, and filter.
  • Each object has a specific responsibility and interacts with other objects to achieve a common goal.

Summary

  • Object orientation is an approach that supports the creation, enhancement, and maintenance of complex enterprise IT systems.
  • It views complex systems as an interaction of cooperating objects.
  • The object-oriented development process consists of object-oriented analysis, object-oriented design, and object-oriented implementation.

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Description

Learn about object-oriented system development through a case study of creating an online shop for media products. Understand the concepts of object interaction and system development.

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