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Any place in a program where a base class object is expected, you are allowed to place an object of a class that is derived from that base class instead. True False

Any place in a program where a base class object is expected, you are allowed to place an object of a class that is derived from that base class instead. True False

Database System Concepts
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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Please answer the two following questions.

Any place in a program where a base class object is expected, you are allowed to place an object of a class that is derived from that base class instead. True False
Transcribed Image Text:Any place in a program where a base class object is expected, you are allowed to place an object of a class that is derived from that base class instead. True False
What is the purpose of a head node in a linked list? Head will be free to point to any Node in the list and typically starts at the first node of the list and moves forward one-at-a-time as the client requests. Head will always point to the fırst node of the list and gives us a way to start traversing it. Head will be free to point to any Node in the list and typically starts at the last node of the list and moves forward one-at-a-time as the client requests. O Head will always point to the last node of the list and gives us a way to start traversing it.
Transcribed Image Text:What is the purpose of a head node in a linked list? Head will be free to point to any Node in the list and typically starts at the first node of the list and moves forward one-at-a-time as the client requests. Head will always point to the fırst node of the list and gives us a way to start traversing it. Head will be free to point to any Node in the list and typically starts at the last node of the list and moves forward one-at-a-time as the client requests. O Head will always point to the last node of the list and gives us a way to start traversing it.
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