Consider the following instance of relation Sells(book_title, library, price): Sells book_title library price The grand design Noura 20,000 Brief history of time Noura 15,000 The grand design Malik's 18,000 Brief history of time Malik's 16,000 Quantum computers Malik's 25,000 Brief history of time Al Dirasat 21,000 What this query is trying to find? Select book title from sells s1 where EXISTS (select from sells where book title=s1.book title and library != s1.library) Select one: O a Books sold by more than one library Ob Books sold by exactly one library OcBooks sold by one library or more. Od Books not sold by any library
Consider the following instance of relation Sells(book_title, library, price): Sells book_title library price The grand design Noura 20,000 Brief history of time Noura 15,000 The grand design Malik's 18,000 Brief history of time Malik's 16,000 Quantum computers Malik's 25,000 Brief history of time Al Dirasat 21,000 What this query is trying to find? Select book title from sells s1 where EXISTS (select from sells where book title=s1.book title and library != s1.library) Select one: O a Books sold by more than one library Ob Books sold by exactly one library OcBooks sold by one library or more. Od Books not sold by any library
Database Systems: Design, Implementation, & Management
12th Edition
ISBN:9781305627482
Author:Carlos Coronel, Steven Morris
Publisher:Carlos Coronel, Steven Morris
Chapter11: Database Performance Tuning And Query Optimization
Section: Chapter Questions
Problem 21P: Problems 1721 are based on the following query: SELECT V_CODE, V_NAME, V_CONTACT, V_STATE FROM...
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