Answered: Outline any four features of…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Outline any four features of Object-Oriented Programming OOP, giving examples in each case.

Expert Solution

Step 1

Four features of Object-Oriented Programming (OOP):

i) Abstraction

The term abstraction refers to the fact that units in Object-Oriented Programming does not indicate the detailed design or implementation.
That is, the classes only specify the functionality of the outside world using objects without providing the implementation details of member functions.
Example: Employee class will have a method getEmployeeCredential without providing the complete details like from where the data is fetched or how to fetch the data.

ii) Polymorphism:

This concept states that the same entity can exist in many forms in Object-Oriented Programming.
For example, a function getArea() will return the area of the figure based on the number and type of arguments passed to it, Like the area of circle, rectangle, triangle.

//for circle

getArea(radius);

//for rectangle

getArea(length, breadth);

That is, same name with many forms. Similarly, operators can be overloaded in Object-Oriented Programming languages like C and C++.

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