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SQL's Three-Valued Logic and Certain Answers - MaRDI portal

SQL's Three-Valued Logic and Certain Answers

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Publication:5738927

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DOI10.4230/LIPIcs.ICDT.2015.94zbMath1365.68213OpenAlexW2114387166MaRDI QIDQ5738927

Leonid O. Libkin

Publication date: 13 June 2017

Full work available at URL: https://doi.org/10.4230/LIPIcs.ICDT.2015.94

zbMATH Keywords

three-valued logic incomplete information query evaluation certain answers null values

Mathematics Subject Classification ID

Database theory (68P15) Logic in computer science (03B70) Many-valued logic (03B50)

Related Items (5)

Querying incomplete information in RDF with SPARQL ⋮ Certain answers as objects and knowledge ⋮ First-order under-approximations of consistent query answers ⋮ Computing possible and certain answers over order-incomplete data ⋮ Negative Knowledge for Certain Query Answers

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