While Using a Surrogate Key, One Must Ensure That the Candidate

question 13

Short Answer

While using a surrogate key, one must ensure that the candidate key of the entity in question performs properly through the use of the "_____" and "not null" constraints.

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Definitions:

Metallic Minerals

Natural mineral formations containing sufficient metal to be beneficially extracted and technically feasible to mine.

Microorganisms

Tiny living organisms, such as bacteria, viruses, and fungi, that can only be seen under a microscope.

Mining

Mining is the extraction of valuable minerals or other geological materials from the Earth, usually from an orebody, lode, vein, seam, reef, or placer deposit.

Air Pollution

Contamination of the air by harmful substances including gases, particulates, and biological molecules, often resulting from human activities.