Which of the Following Is the Unique Identifier of an Entity

question 41

Multiple Choice

Which of the following is the unique identifier of an entity?

• A) field
• B) key
• C) record type
• D) record occurrence
• E) file

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Definitions:

Chemical Bond

Attractive force that arises between two atoms when their electrons interact; links atoms into molecules.

Nonionic Solids

Substances that consist of molecules bound together by covalent bonds rather than ionic bonds, lacking charge separation.

Dissociate

To separate or remove from association; in chemistry, it refers to the reversible separation of molecules into smaller particles.

Buffers

Chemical substances that help maintain the stability of pH levels in solutions by neutralizing the effects of acids and bases.