The following Data Base shows some sample data values for an extended form of the Zoo and Visitors. The significance of Visiting row is that the Visitor visits a specified Zoo in a specified date : What was the request of the relational algebra query below (make a query text )
The following Data Base shows some sample data values for an extended form of the Zoo and Visitors. The significance of Visiting row is that the Visitor visits a specified Zoo in a specified date : What was the request of the relational algebra query below (make a query text )
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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The following Data Base shows some sample data values for an extended form of the Zoo and Visitors. The significance of Visiting row is that the Visitor visits a specified Zoo in a specified date :
What was the request of the relational algebra query below (make a query text ).
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Zoo :
Visitors :
Zno
City
Vno
Name
Address
Age
Z1
Gaza
V1
Fuad
Gaza
55
Z2
Nusirat
V2
Rami
Gaza
20
Z3
Gaza
V3
Ahmed
Nusirat
31
V4
Ahmed
Gaza
45
V5
Ali
Rafa
20
Visiting :
Vno
Zno
Date
V2
Z1
11-11-1998
Vi
Z3
15-10-1999
V2
Z2
11-01-2003
V2
Z3
11-01-2003
V1
Z2
06-03-1997
V3
Z1
06-031997
V3
Z3
11-11-2005
V4
Z3
11-11-2005
V2
Z2
12-12-2005
Given the following relational Algebra query :
Visitors DVisitors.Vno = Visiting.Vno|
Vno[TIvno,Zno( Visiting
IZno [ 8 City = "Gaza' ( Zoo )]]
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Zoo :
Visitors :
Zno
City
Vno
Name
Address
Age
Z1
Gaza
V1
Fuad
Gaza
55
Z2
Nusirat
V2
Rami
Gaza
20
Z3
Gaza
V3
Ahmed
Nusirat
31
V4
Ahmed
Gaza
45
V5
Ali
Rafa
20
Visiting :
Vno
Zno
Date
V2
Z1
11-11-1998
Vi
Z3
15-10-1999
V2
Z2
11-01-2003
V2
Z3
11-01-2003
V1
Z2
06-03-1997
V3
Z1
06-031997
V3
Z3
11-11-2005
V4
Z3
11-11-2005
V2
Z2
12-12-2005
Given the following relational Algebra query :
Visitors DVisitors.Vno = Visiting.Vno|
Vno[TIvno,Zno( Visiting
IZno [ 8 City = "Gaza' ( Zoo )]]
Page 2 of 5
743 words
130%
6:35 PM
P Type here to search
A 4x O G ENG
04/06/2021
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