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by davidmathers
6078 days ago
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What you describe is a pointer, but not a surrogate key. http://en.wikipedia.org/wiki/Surrogate_key "For example, table Staff may contain two rows for "John Smith", one row when he was employed between 1990 and 1999, another row when he was employed between 2001 and 2006. The surrogate key is identical (non-unique) in both rows however the primary key will be unique." |
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