If any member function is defined to be virtual, the destructor should also be defined to be virtual. 2-If an assignment operator is defined in the base class, then an assignment operator must be defined in the derived class. 3-The copy constructor for the derived class automatcally calls the default constructor of the base class before it runs.

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
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Which of the following are true for inherited operators?

 
1- If any member function is defined to be virtual, the destructor should also be defined to be virtual.
2-If an assignment operator is defined in the base class, then an assignment operator must be defined in the derived class.
3-The copy constructor for the derived class automatcally calls the default constructor of the base class before it runs.
4-Relational operators need not be defined in the derived classes if there is a virtual function that can be used to compare.
5-All overloaded operators except the copy assignment operator(=) are inherited.
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