A library contains books and DVDS, which can be checked out andreturned. A warning is sent to borrowers who have overdue items. Bookscan be renewed but DVDS cannot, and DVDS have a shorter loan periodthan books. The library may expand in future to include other kinds ofitems.Suppose you are designing classes for the library. Which of the designsbelow is most appropriate?O A Libraryltem parent class that stores common information such as due date,and child classes Book and DVD.O A Book class and a DVD class that are unrelated, and a Libraryltem class thatstores an instance of Book or DVD in an instance attributeO A Book class and a DVD class that have no relationshipO A Libraryltem class whose attributes can be initialized differently depending on

Ans.) Option B i.e. A Book class and Dvd class that are unrelated and a Library class that stores…

renewed but DVDS cannot, and DVDS have a shorter loan perio oks. The library may expand in future to include other kinds of e you are designing classes for the library. Which of the designs s most appropriate? praryltem parent class that stores common information such as due date, child classes Book and DVD. ok class and a DVD class that are unrelated, and a Libraryltem class that es an instance of Book or DVD in an instance attribute

renewed but DVDS cannot, and DVDS have a shorter loan perio oks. The library may expand in future to include other kinds of e you are designing classes for the library. Which of the designs s most appropriate? praryltem parent class that stores common information such as due date, child classes Book and DVD. ok class and a DVD class that are unrelated, and a Libraryltem class that es an instance of Book or DVD in an instance attribute

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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