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What is the key for table t

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Reference no: EM13938854

Given the following table T and the set of functional dependencies F:

T

A B C D

a1 b1 c1 d1

a1 b1 c2 d2

a2 b1 c1 d3

a2 b1 c3 d4

a2 b1 c4 d5

F = {A → B, C → B, D → ABC, AC → D}

a. What is the key for table T?

b. What is the highest normal form for table T? Please explain.

c. Given the following records or rows:

(a5, b6, c7, d8)

(a2, b2, c1, d8)

(a3, b1, c4, d3)

(a1, b1, c2, d5)

Please indicate which record can be added into table T without violating any of the functional dependencies in F. If the record or row cannot be legally added, please indicate which functional dependency is violated.

Reference no: EM13938854

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