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CS403 Assignment No 4 Deadline 29 June 2010
CS403 Database Management Systems Assignment No 4View more random threads:
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Spring 2010
Total Marks: 20
Due Date: 29/06/2010
[Q1. In which normal form the following STUDENT relation is if only A,B can act as the key. Marks 10
STUDENT(A, B, C, D, E, F, G, H) Where A, B, C and so on are the attributes of the relation STUDENT.
A, B -> C, D, E
C -> F
D -> G
E -> H
Note: Also mention why the relation is in that normal form.
Q2. Examine the table shown below which is already in Second Normal Form (2NF). Marks 10
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You are required to normalize this relation into Third Normal Form (3NF).
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sol b mily ga kia?
zaroor milay ga bhai just wait na. bana rahay han.
Allah bhla kry g ap ka
Ameen aur app ka bhi. what is ur name and where u from? introduce tu karwa den.
[Q1. In which normal form the following STUDENT relation is if only A,B can act as the key. Marks 10
Answer:
No normal form exist here because here is functional dependency and starting form first normal form we have to remove the functional dependency. That’s why relation is in no normal form.
Q2. Examine the table shown below which is already in Second Normal Form (2NF). Marks 10
Answer:
3rd normal form:
Address ---------------------------------------------- Tel_No
New Garden Town, Lahore---------------------------042-4466375,042-4586975,042-4554668
Blue Area, Islamabad---------------------------------- 051-5546584,051-4687458
Address is taken as forigen key in 3rd normal form.
:o:o--------------------------------------------------------------------------------------:o:o
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