A _____,Which Is Not Unique,is a Field or Combination of Fields

question 18

Multiple Choice

A _____,which is not unique,is a field or combination of fields that can be used to access or retrieve records.

• A) no-frills key
• B) super key
• C) secondary key
• D) foreign key

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Definitions:

Obverse

The statement formed by negating both the subject and predicate of a given categorical proposition and changing the quality of the original proposition (from affirmative to negative or vice versa).

Proposition

A statement or assertion that expresses a judgment or opinion, which can be evaluated as true or false.

Obverse

The opposite or counterpart of a given statement, often involving negation.

Complement

In set theory, the set of all elements not in a specific set, relative to a larger set.