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what is an sid (surrogate key)?

Answer Posted / 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.

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