A Rule That Requires Every Value in a Foreign Key

question 68

Short Answer

A rule that requires every value in a foreign key to match values in the corresponding primary key is called a(n)________ constraint.

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Definitions:

Simultaneous Processing

The cognitive ability to process several components of information at once, integrating them into a comprehensive understanding.

Autism Spectrum Disorder

The best known of the pervasive developmental disorders. Autistic children exhibit a lack of social responsiveness or extreme autistic aloneness; very limited or unusual communication patterns; unusual patterns of behaviour such as a lack of eye contact; self-stimulation, including rocking, spinning, or flapping; self-injury, including head-banging or hand-biting; an obsessive interest in particular objects; and an obsessive need for sameness. From the Greek autos, “self.”

Leo Kanner

An Austrian-American psychiatrist known for his work in autism research and for first describing autism as a neurodevelopmental disorder.

Childhood Disorder

A wide range of psychological, developmental, and emotional disorders that affect children and adolescents.