Explain authorization and integrity manager, Database Management System

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Explain Authorization and Integrity Manager ?

Authorization and Integrity Manager: Tests for the satisfaction of integrity constraints and checks the authority of users to access data.

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explain multi key file organisation

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Object-based Models: Use objects as key data representation components . Examples:- Entity-Relationship Model: It is a collection of real world objects known as entitie

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Question: Consider the following database relations for a textbook ordering system used by a college bookshop: Book (b-copy#, bname, ISBN#, author, price, subject) Order (s#

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