A ________ is a single field or combination of fields that contains a unique record. - Oracle Quiz

Oracle - Quiz(MCQ)

A ________ is a single field or combination of fields that contains a unique record.

A)

Index

B)

Primary key

C)

Foreign Key

D)

Compound Key

Correct Answer : Primary key

Explanation : A primary key is a single field or combination of fields that contains a unique record. It must be filled. None of the field of primary key can contain a null value. A table can have only one primary key.

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