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

question 114

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 are True.

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Definitions:

Public Good

An offering of goods or services to society's members at no cost, supplied by the government or private parties, aiming not to generate profit.

Private Good

A product or service that is excludable and rivalrous, meaning its consumption by one individual prevents its consumption by another.

Optimal Level

Optimal Level refers to the most efficient, beneficial, or profitable position or state for a particular process, activity, or economic outcome.

Public Good

A good that is non-excludable and non-rivalrous, meaning it is accessible to all and one individual's use does not diminish its availability to others.