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Three-Valued Logic

White Paper Published By: Ted Hills
Ted Hills
Published:  Mar 08, 2017
Type:  White Paper
Length:  17 pages

Much has been written and debated about the use of SQL NULLs to represent unknown values, and the possible use of three-valued logic.  However, there has never been a systematic application of any three-valued logic to use in the logical expressions of computer programs.  This paper lays the foundation for a systematic application of three-valued logic to one of the two problems inadequately addressed by SQL NULLs.



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