Difference between revisions of "Unique Key Index"

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Latest revision as of 03:00, 12 October 2012

A Unique Key Index is an index in which there are no duplicate keys. With such an index, every key points to one and only one record.

For example:

  • In a Case Management system, every case number is unique.
  • In an index of companies, every company name is unique.
  • In a list of U.S. citizens, every social security number is unique.

Learn more: