Consider the following 1NF relation R1 ( SocialNumber, CNUMBER, PNAME, HOURS ) The normalized (2NF) relations of R1 can be represented as the following R11 ( PNUMBER, PNAME ) R12 ( SSN, PNUMBER, HOURS ) Assume we have the following 5 records stored in these tables. (Image Attached) You are interested in knowing the value of PNAME when PNUMBER = 1500. Use your knowledge of physical design (indexes) to outline your solution for 1NF and 2NF. Which one is more efficient and why?
Consider the following 1NF relation R1 ( SocialNumber, CNUMBER, PNAME, HOURS ) The normalized (2NF) relations of R1 can be represented as the following R11 ( PNUMBER, PNAME ) R12 ( SSN, PNUMBER, HOURS ) Assume we have the following 5 records stored in these tables. (Image Attached) You are interested in knowing the value of PNAME when PNUMBER = 1500. Use your knowledge of physical design (indexes) to outline your solution for 1NF and 2NF. Which one is more efficient and why?
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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Question
Consider the following 1NF relation
R1 ( SocialNumber, CNUMBER, PNAME, HOURS )
The normalized (2NF) relations of R1 can be represented as the following
R11 ( PNUMBER, PNAME )
R12 ( SSN, PNUMBER, HOURS )
Assume we have the following 5 records stored in these tables.
(Image Attached)
You are interested in knowing the value of PNAME when PNUMBER = 1500. Use your knowledge of physical design (indexes) to outline your solution for 1NF and 2NF. Which one is more efficient and why?
![SSN PNUMBER PNAME
HOURS
100
1000
Hadoop
50
220
1200
CRM
200
280
1000
Hadoop
40
300
1500
Java
100
120
1000
Hadoop
120
2 NF
SSN PNUMBER HOURS
PNUMBER PNAME
100
1000
50
1000
Hadoop
220
1200
200
1200
CRM
280
1000
40
1500
Java
300
1500
100
120
1000
120](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F657e2292-6548-436a-8534-a8c8a45fc0a9%2F55fd6126-7e67-4598-a3d4-8bd0b2d2305b%2F62qy0zj_processed.png&w=3840&q=75)
Transcribed Image Text:SSN PNUMBER PNAME
HOURS
100
1000
Hadoop
50
220
1200
CRM
200
280
1000
Hadoop
40
300
1500
Java
100
120
1000
Hadoop
120
2 NF
SSN PNUMBER HOURS
PNUMBER PNAME
100
1000
50
1000
Hadoop
220
1200
200
1200
CRM
280
1000
40
1500
Java
300
1500
100
120
1000
120
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