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ITDA1001 Database Fundamentals

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Questions:

Task 1: Review Questions

1.What is the basic function of Normalisation ?

2.What is a functional dependency ?

3.What should you consider in the 1st Normal form ? Explain with an example.

4.What should you consider in the 2ndNormal form ? Explain with an example.

5.What should you consider in the 3rdNormal form ? Explain with an example.

6.Explain the reasons to do normalization for relational schemas.

Task 2: Problems

1.Consider the following schema and dependencies.

T(A, B, C, D, E, F, G, H, I )A and B are the primary key of the relation T.

And relation T has following dependencies.A ->D,

EB -> F

H-> I

Identify different dependencies and normalize relation T to 3rd Normal Form (including 3rdNF). Show Primary and foreign key using arrows on the final resulting schemas.

2.Perform the normalization for following data.

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