What is a candidate key?
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A candidate key is a combination of attributes that can be
uniquely used to identify a database record without any
extraneous data(unique). Each table may have one or more
candidate keys. One of these candidate keys is selected as
the table primary key else are called Alternate Key.
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Answer / subramanyam
A key that uniquely identifies rows in a table. Any of the
identified candidate keys can be used as the table's
primary key. Any of the candidate keys that is not part of
the primary key is called an alternate key. One can
describe a Candidate Key as a Super Key that contains only
the minimum number of columns necessary to determine
uniqueness.
| Is This Answer Correct ? | 5 Yes | 0 No |
Answer / lavanya
A candidate key is one that can identify each row of a
table uniquely. Generally a candidate key becomes the
primary key of the table. If the table has more than one
candidate key, one of them will become the primary key, and
the rest are called alternate keys.
| Is This Answer Correct ? | 5 Yes | 1 No |
Answer / surendra
A candidate key is one that can identify each row of a
table uniquely. Generally a candidate key becomes the
primary key of the table. If the table has more than one
candidate key, one of them will become the primary key, and
the rest are called alternate keys.
A key formed by combining at least two or more columns is
called composite key.
| Is This Answer Correct ? | 2 Yes | 0 No |
Answer / sivakumar
A candidate key is a combination of attributes that can be
uniquely used to identify a database record without any
extraneous data(unique).One of these candidate keys is selected as
the table primary key else are called Alternate Key. Each table may have one or more
candidate keys. One of these candidate keys is selected as
the table primary key else are called Alternate Key.
| Is This Answer Correct ? | 0 Yes | 0 No |
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