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what is an sid (surrogate key)?
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Answer / arkchowdary
Surrogate Key----------------- It is a System Generated Key
they are not derived from any Data Sources.
Surrogate Key----------------- It is a Unique Identifier.
Surrogate Key----------------- It is used to identify each
Row of a table uniqely.
Surrogate Key---------------- It also helps to track Slowly
Changing Dimensions.
Surrogate Key---------------- It replaces all Natural Keys.
| Is This Answer Correct ? | 9 Yes | 0 No |
Answer / madho
it's a duplicate key for primary key or unique key
when we need to maintain historical data instead of primary
key and unique key we use surrogate key...
| Is This Answer Correct ? | 5 Yes | 2 No |
Answer / bhaskar.nagi
It is a System Generated Key. It is act as a Primary Key.
| Is This Answer Correct ? | 1 Yes | 0 No |
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