4. A database is built in the library to catalogue books and handle book lending. Each book in the library is catalogued by author. Any number of books can be associated to an author. Each user is allowed to borrow one and only one book. The database stores information about the following entities and their relationships: User: unique reference number, name, and phone number, ● Author: unique reference number, name ● Book: unique title, category (e.g. Physics, Science,..), publication year, the user (reference) borrowing the book, the author (reference) of the book. a) Write SQL CREATE TABLE statements for these three tables. Justify your choices of keys used. b) Write SQL statements to perform the following tasks: (i) Insert a new entry in the user table (for a set of values at your choice). (ii) List the title for all books with author "Stephen King". (iii) List the names of all the authors in the database, and beside each name give the number of books published on or after 2017

4. A database is built in the library to catalogue books and handle book lending. Each book in the library is catalogued by author. Any number of books can be associated to an author. Each user is allowed to borrow one and only one book. The database stores information about the following entities and their relationships: User: unique reference number, name, and phone number, ● Author: unique reference number, name ● Book: unique title, category (e.g. Physics, Science,..), publication year, the user (reference) borrowing the book, the author (reference) of the book. a) Write SQL CREATE TABLE statements for these three tables. Justify your choices of keys used. b) Write SQL statements to perform the following tasks: (i) Insert a new entry in the user table (for a set of values at your choice). (ii) List the title for all books with author "Stephen King". (iii) List the names of all the authors in the database, and beside each name give the number of books published on or after 2017

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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