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)
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Author:James Kurose, Keith Ross
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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
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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