zbMath0686.68065MaRDI QIDQ1262790
Nguyen Cat Ho
Publication date: 1988 Published in: Bulletin of the Polish Academy of Sciences. Technical Sciences (Search for Journal in Brave)
zbMATH Keywords
multiple-valued logicsnull valuesdatabase systems
Mathematics Subject Classification ID
Information storage and retrieval of data (68P20) Many-valued logic (03B50)
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