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2 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Tables in second normal form (2NF)

Eliminate all hidden dependencies

Eliminate the possibility of a insertion anomalies

Have a composite key

Have all non key fields depend on the whole primary key

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which-one ofthe following statements about normal forms is FALSE?

BCNF is stricter than 3 NF

Lossless, dependency -preserving decomposition into 3 NF is always possible

Loss less, dependency – preserving decomposition into BCNF is always possible

Any relation with two attributes is BCNF

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