For Any Relation R, If, for Every Valid Instance of A

question 88

Multiple Choice

For any relation R, if, for every valid instance of A, that value of A uniquely determines the value of B:

• A) then a primary dependency exists in the relation.
• B) then A is said to be functionally dependent on B.
• C) then B is said to be functionally dependent on A.
• D) then A and B are candidate keys for the relation.
• E) None of the above is true.

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Definitions:

Indwelling Urinary Catheter

A tube inserted into the bladder through the urethra to collect urine, often used for patients unable to urinate on their own.

Deflated

Feeling of being let down or reduced in spirit, morale, or volume, often used metaphorically to describe emotions.

Withdraw

The act of removing, taking back, or retreating from a position or situation.

Urinary Catheterization

The insertion of a catheter into the bladder through the urethra to drain urine, used for patients who cannot urinate naturally.