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1.	In a relation, the order of the columns does not matter.
A.	1
B.
C.	1
D.
Answer» B.

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Given the functional dependency , is called the determinant.
The functional dependency means that the value of S can be determined when we are given a value of R.
Given the functional dependency , then it is also true that .
Given the functional dependency R → S , R is called the determinant.
In a relation, the rows are sometimes called "fields".
In a relation, the columns are sometimes called "attributes".
The functional dependency R → S means that the value of S can be determined when we are given a value of R.
Given the functional dependency R → (S,T) , then it is also true that R → S.
In a relation, the rows are sometimes called "records".
A relation is in Boyce-Codd Normal Form (BCNF) if every determinant is a composite key.

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