Inferring null join dependencies in relational databases

DOI10.1007/BF02074878zbMath0752.68028OpenAlexW2071285637WikidataQ114693692 ScholiaQ114693692MaRDI QIDQ1198969

George Loizou, Mark Levene

Publication date: 16 January 1993

Published in: BIT (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/bf02074878

zbMATH Keywords

null valuesnull join dependenciesnull-relationsor-chase procedureor-relations

Mathematics Subject Classification ID

Database theory (68P15)

Related Items (2)

The nested universal relation data model ⋮ Null inclusion dependencies in relational databases

Cites Work

• Unnamed Item
• Unnamed Item
• Lossless outer joins with incomplete information
• A new interpretation for null values in the weak instance model
• Database relations with null values
• Fixed-point extensions of first-order logic
• The nested universal relation database model
• Nonapplicable nulls
• Degrees of acyclicity for hypergraphs and relational database schemes
• Incomplete Information in Relational Databases
• A Proof Procedure for Data Dependencies
• Subset Dependencies and a Completeness Result for a Subclass of Embedded Multivalued Dependencies
• A Complete Axiomatization of Full Join Dependencies

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