Write a query to display the patron ID, book number, and days kept for each checkout. "Days Kept" is the difference from the date on which the book is returned to the date it was checked out. Sort the results by days kept in descending order, then by patron ID, and then by book number (Figure P7.87).

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
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Problem 87
Write a query to display the patron ID, book number, and days kept for each
checkout. "Days Kept" is the difference from the date on which the book is
returned to the date it was checked out. Sort the results by days kept in
descending order, then by patron ID, and then by book number (Figure P7.87). (68
rows)
PATRON
BOOK
Days Kept
1160
5240
78
1165
5235
78
1185
5240
78
1219
5248
78
1222
5240
78
1226
5244
78
1202
5236
77
1218
5236
77
1228
5237
77
1220
5235
76
Figure 7.87
Task
Transcribed Image Text:Problem 87 Write a query to display the patron ID, book number, and days kept for each checkout. "Days Kept" is the difference from the date on which the book is returned to the date it was checked out. Sort the results by days kept in descending order, then by patron ID, and then by book number (Figure P7.87). (68 rows) PATRON BOOK Days Kept 1160 5240 78 1165 5235 78 1185 5240 78 1219 5248 78 1222 5240 78 1226 5244 78 1202 5236 77 1218 5236 77 1228 5237 77 1220 5235 76 Figure 7.87 Task
Database Schema
The schema for the Ch07_FACT database is shown below and should be used to answer the
next several problems. Click this image to view it in its own tab.
FIGURE P7.56 THE CH07_FACT ERD
CHECKOUT
PATRON
PK
Check Num
PK Pat ID
FK1 Book_Num
FK2 Pat_ID
Check_Out_Date
Check_Due_Date
Check_In_Date
>0-----H-
Pat_FName
Pat LName
Pat_Type
BOOK
AUTHOR
PK
Book_Num
PK Au ID
Book_Title
Book_Year
Book_Cost
Book_Subject
FK1 Pat_ID
Au_FName
Au_LName
Au_BirthYear
WRITES
PK,FK1 Book Num
PK,FK2 Au ID
The CIS Department at Tiny College maintains the Free Access to Current Technology (FACT)
library of e-books. FACT is a collection of current technology e-books for use by faculty and
students. Agreements with the publishers allow patrons to electronically check out a book,
Transcribed Image Text:Database Schema The schema for the Ch07_FACT database is shown below and should be used to answer the next several problems. Click this image to view it in its own tab. FIGURE P7.56 THE CH07_FACT ERD CHECKOUT PATRON PK Check Num PK Pat ID FK1 Book_Num FK2 Pat_ID Check_Out_Date Check_Due_Date Check_In_Date >0-----H- Pat_FName Pat LName Pat_Type BOOK AUTHOR PK Book_Num PK Au ID Book_Title Book_Year Book_Cost Book_Subject FK1 Pat_ID Au_FName Au_LName Au_BirthYear WRITES PK,FK1 Book Num PK,FK2 Au ID The CIS Department at Tiny College maintains the Free Access to Current Technology (FACT) library of e-books. FACT is a collection of current technology e-books for use by faculty and students. Agreements with the publishers allow patrons to electronically check out a book,
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