Which UML diagram best represents the relationship depicted in the following code? public abstract class People { private int age; private String name; public abstract void printInfo(); } public class Student extends People { private int grade; public void printInfo() {...}; } public class Teacher extends People { private int experience; public void printInfo() {...}; } Teachers Teachers People People Students Students

Which UML diagram best represents the relationship depicted in the following code? public abstract class People { private int age; private String name; public abstract void printInfo(); } public class Student extends People { private int grade; public void printInfo() {...}; } public class Teacher extends People { private int experience; public void printInfo() {...}; } Teachers Teachers People People Students Students

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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When should one use an abstract class, when should one use an interface, and when should one use both?
Differentiate between static and instance class members. Explain with proper example when you should make members static?
An abstract class's parent class's abstract methods must all be implemented by its subclasses. Is it real or not?
True or False? Because child classes in generalizations inherit the attributes, operations, and relationships of the parent, you must only define for the child the attributes, operations, or relationships that are distinct from the parent.
Explain and give: Interface using examples. why you mighti use an Abstract class rather than an reasons