The Integrity Constraint That Ensures That Every Many Record in a One-To-Many

question 59

Multiple Choice

The integrity constraint that ensures that every many record in a one-to-many relationship has a matching record in the one file is called:

• A) entity integrity.
• B) referential integrity.
• C) domain integrity.
• D) ordinal integrity.
• E) cardinal integrity.

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Definitions:

Microglia

A type of glial cell located throughout the brain and spinal cord, acting as the primary form of active immune defense in the central nervous system.

CNS

Central Nervous System, which comprises the brain and spinal cord, responsible for processing information and controlling the majority of functions of the body and mind.

Myelin Sheath

The myelin sheath is a protective covering made of fatty substances that surrounds nerve fibers, enhancing the speed and efficiency of electrical signal transmission along the nerve cells.

Action Potential

A rapid rise and subsequent fall in voltage or electrical charge across a cellular membrane, the basis for neural communication and muscle contraction.