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Being a database expert create fragments of the given relation(table) “student” on the basis of the usage information and access information as given below.   Student aridno name email cell gpa class   Usage Information q1=Select * from Student q2=Select aridno, name from Student where gpa>value q3=Select name, email, cell from Student where class=value

Being a database expert create fragments of the given relation(table) “student” on the basis of the usage information and access information as given below.   Student aridno name email cell gpa class   Usage Information q1=Select * from Student q2=Select aridno, name from Student where gpa>value q3=Select name, email, cell from Student where class=value

Fundamentals of Information Systems
Fundamentals of Information Systems
8th Edition
ISBN:9781305082168
Author:Ralph Stair, George Reynolds
Publisher:Ralph Stair, George Reynolds
Chapter3: Database Systems And Applications
Section: Chapter Questions
Problem 2.1CTQ
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Being a database expert create fragments of the given relation(table) “student” on the basis of the usage information and access information as given below.

 

Student

aridno

name

email

cell

gpa

class

 

Usage Information

q1=Select * from Student

  1. q2=Select aridno, name from Student where gpa>value
  2. q3=Select name, email, cell from Student where class=value
  3. q4=Select name, gpa, cell from Student where aridno=value
  4. q5=Select aridno, name, gpa, class from Student
  5. q6=Select email, class from student

Access Information

  1. Site 1: q1(20),q2(300),q3(120), q4(50),q5(0),q6(200)
  2. Site 2: q1(140),q2(30),q3(220), q4(550),q5(40),q6(600)
  3. Site 3: q1(330),q2(350),q3(70), q4(0),q5(1200),q6(320)
  4. Site 4: q1(150),q2(150),q3(200), q4(500),q5(150),q6(400)
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