When the Primary Key Cannot Be Null, This Is Known

question 36

Short Answer

When the primary key cannot be null, this is known as ____________________.

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Definitions:

Hippocampus

A neural center located in the limbic system; helps process explicit (conscious) memories—of facts and events—for storage.

Frontal Lobes

The portion of the cerebral cortex lying just behind the forehead; involved in speaking and muscle movements and in making plans and judgments.

Explicit Memory

A form of enduring memory that entails the deliberate recall of particular details and occurrences.

Semantic Memory

Explicit memory of facts and general knowledge; one of our two conscious memory systems (the other is episodic memory).