can you any body tell me the difference between candidate key and primary key

can you any body tell me the difference between candidate
key and primary key

Question Posted / hari

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can you any body tell me the difference between candidate key and primary key..

Answer / vani

A candidate is a one that can identify each row in a table
uniquely.If a table has more than one candidate key , one
of them will become primary key.
The potential primary key is a candidate key.

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can you any body tell me the difference between candidate key and primary key..

Answer / arijit

A candidate key is a combination of attributes that can be
uniquely used to identify a database record without any
extraneous data. Each table may have one or more candidate
keys. One of these candidate keys is selected as the table
primary key.

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2 Yes

1 No

can you any body tell me the difference between candidate key and primary key..

Answer / prasad

There can be more than one index in a table.
But only one field can be a Primary Key in a table.
All other index fields in a table are called candidate keys.

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2 Yes

1 No

can you any body tell me the difference between candidate key and primary key..

Answer / pooja

A primary key is one that uniquely identiifes each row.
and there is only one primary key per table.

candidate key:All that fields which can be selected as
primary key are called candidate keys.

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0 Yes

1 No

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