please use sql to answer the following question and erd had been attach 5.Determine the average retail price of books by publisher name and category. Include only the categories Children and Computer and the groups with an average retail price greater than $50.

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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please use sql to answer the following question and erd had been attach

5.Determine the average retail price of books by publisher name and category. Include only the categories Children and Computer and the groups with an average retail price greater than $50.

ORDERS
Order#
Customer#
Orderdate
Shipdate
Shipstreet
Shipcity
Shipstate
Shipzip
Shipcost
CUSTOMERS
Customer#
Lastname
Firstname
Email
Address
City
State
Zip
Referred
Region
BOOKAUTHOR AUTHOR
ВОOKS
AuthorD
ISBN
ISBN
AuthorID
Lname
Fname
ORDERITEMS
Title
Pubdate
PubID
Cost
Retall
Discount
Category
Order#
Item#
ISBN
Quantity
Paideach
PUBLISHER
PubID
Name
PROMOTION Contact
Gift
Minretail
Maxretall
Phone
FIGURE 1-5
JustLee Books's table structures after normalization
Transcribed Image Text:ORDERS Order# Customer# Orderdate Shipdate Shipstreet Shipcity Shipstate Shipzip Shipcost CUSTOMERS Customer# Lastname Firstname Email Address City State Zip Referred Region BOOKAUTHOR AUTHOR ВОOKS AuthorD ISBN ISBN AuthorID Lname Fname ORDERITEMS Title Pubdate PubID Cost Retall Discount Category Order# Item# ISBN Quantity Paideach PUBLISHER PubID Name PROMOTION Contact Gift Minretail Maxretall Phone FIGURE 1-5 JustLee Books's table structures after normalization
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