6. Write a query to list the isbn of the books along with the number of authors for each book. If a bookdoes not have an author, it should not appear on the result set. mysql> DESC bookauthor;mysql> DESC author;mysql> DESC book;| Field| Туре| Field| Туре| FieldТур| int(11| varchaiauthor_order | int(11royaltyshare | decima:author_idisbn| author_id | int(1:| ssnlastname| firstname | varch:| phone| address| city| state| zip| varch:| varch:isbnvarI name| typepub_idI price| advanceI ytd_salesI pubdatevarvar| varch:| varch:| varch:| varch:| varch:| intdec| decintmysql> DESC bookeditor;| dat| Field| Туреmysql> DESC editor;mysql> DESC publisher;editor_id | int(11)| varchar(1| Fieldisbn| Field| Туреeditor_idssnpub_id | int(11)| varchar(40)varchar(40)varchar(20)varchar(2)lastnamenamefirstnameaddress| phoneeditor_positionsalary| citystate

For, solving the given query we are creating two tables book and bookauthor with the required column…

Answered: Write a query to list the isbn of the…

Write a query to list the isbn of the books along with the number of authors for each book. If a book does not have an author, it should not appear on the result set.

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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Concept explainers

Single Table

In a database management system, a single table is designed to obtain data of heterogeneous items. A single-table design with DynamoDB resolves the issue of raising multiple requests for the relevant data of an entity.

Question

6. Write a query to list the isbn of the books along with the number of authors for each book. If a book
does not have an author, it should not appear on the result set.

mysql> DESC bookauthor;
mysql> DESC author;
mysql> DESC book;
| Field
| Туре
| Field
| Туре
| Field
Тур
| int(11
| varchai
author_order | int(11
royaltyshare | decima:
author_id
isbn
| author_id | int(1:
| ssn
lastname
| firstname | varch:
| phone
| address
| city
| state
| zip
| varch:
| varch:
isbn
var
I name
| type
pub_id
I price
| advance
I ytd_sales
I pubdate
var
var
| varch:
| varch:
| varch:
| varch:
| varch:
| int
dec
| dec
int
mysql> DESC bookeditor;
| dat
| Field
| Туре
mysql> DESC editor;
mysql> DESC publisher;
editor_id | int(11)
| varchar(1
| Field
isbn
| Field
| Туре
editor_id
ssn
pub_id | int(11)
| varchar(40)
varchar(40)
varchar(20)
varchar(2)
lastname
name
firstname
address
| phone
editor_position
salary
| city
state

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