Foreign Keys Are Necessary in a Database Because Every Record

question 55

True/False

Foreign keys are necessary in a database because every record must have a foreign key.

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Definitions:

Red Blood Cells

Cells in the blood that carry oxygen to body tissues and organs through the protein hemoglobin.

Dominant-Recessive

Describes the relationship between two alleles of a gene, where the dominant allele's traits are expressed in the phenotype over the recessive allele's traits, which are masked when paired with a dominant allele.

Color Blindness

A condition characterized by the inability to see colors in a normal way, resulting from deficiencies in the color-sensing pigments in the eye.

Prader-Willi Syndrome

A rare genetic disorder that results in a number of physical, mental, and behavioral problems, including a constant sense of hunger.