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Surrogate Key in Datastage

Surrogate Key is a unique identification key. It is alternative to natural key .

And in natural key, it may have alphanumeric composite key but the surrogate is

always single numeric key.

Surrogate key is used to generate key columns, for which characteristics can be

specified. The surrogate key generates sequential incremental and unique integers for a

provided start point. It can have a single input and a single output link.











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