FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2000290232> ?p ?o ?g. }

• W2000290232 endingPage "57" @default.
• W2000290232 startingPage "1" @default.
• W2000290232 abstract "In valid-time indeterminacy it is known that an event stored in a database did in fact occur, but it is not known exactly when . In this paper we extend the SQL data model and query language to support valid-time indeterminacy. We represent the occurrence time of an event with a set of possible instants, delimiting when the event might have occurred, and a probability distribution over that set. We also describe query language constructs to retrieve information in the presence of indeterminacy. These constructs enable users to specify their credibility in the underlying data and their plausibility in the relationships among that data. A denotational semantics for SQL's select statement with optional credibility and plausibility constructs is given. We show that this semantics is reliable, in that it never produces incorrect information, is maximal, in that if it were extended to be more informative, the results may not be reliable, and reduces to the previous semantics when there is no indeterminacy. Although the extended data model and query language provide needed modeling capabilities, these extensions appear initially to carry a significant execution cost. A contribution of this paper is to demonstrate that our approach is useful and practical. An efficient representation of valid-time indeterminacy and efficient query processing algorithms are provided. The cost of support for indeterminacy is empirically measured, and is shown to be modest. Finally, we show that the approach is general, by applying it to the temporal query language constructs being proposed for SQL3." @default.
• W2000290232 created "2016-06-24" @default.
• W2000290232 creator A5005123859 @default.
• W2000290232 creator A5058823251 @default.
• W2000290232 date "1998-03-01" @default.
• W2000290232 modified "2023-10-06" @default.
• W2000290232 title "Supporting valid-time indeterminacy" @default.
• W2000290232 cites W1526523172 @default.
• W2000290232 cites W1526814147 @default.
• W2000290232 cites W1970065917 @default.
• W2000290232 cites W1992609556 @default.
• W2000290232 cites W1993849034 @default.
• W2000290232 cites W2003017562 @default.
• W2000290232 cites W2004851292 @default.
• W2000290232 cites W2013277984 @default.
• W2000290232 cites W2024400846 @default.
• W2000290232 cites W2032352315 @default.
• W2000290232 cites W2046005538 @default.
• W2000290232 cites W2056147406 @default.
• W2000290232 cites W2066837227 @default.
• W2000290232 cites W2083820144 @default.
• W2000290232 cites W2085988990 @default.
• W2000290232 cites W2086784214 @default.
• W2000290232 cites W2095303876 @default.
• W2000290232 cites W2097518550 @default.
• W2000290232 cites W2103343882 @default.
• W2000290232 cites W2119984902 @default.
• W2000290232 cites W2125791539 @default.
• W2000290232 cites W2139722852 @default.
• W2000290232 cites W2148454664 @default.
• W2000290232 cites W2159948956 @default.
• W2000290232 cites W2161484642 @default.
• W2000290232 doi "https://doi.org/10.1145/288086.288087" @default.
• W2000290232 hasPublicationYear "1998" @default.
• W2000290232 type Work @default.
• W2000290232 sameAs 2000290232 @default.
• W2000290232 citedByCount "146" @default.
• W2000290232 countsByYear W20002902322012 @default.
• W2000290232 countsByYear W20002902322013 @default.
• W2000290232 countsByYear W20002902322014 @default.
• W2000290232 countsByYear W20002902322015 @default.
• W2000290232 countsByYear W20002902322016 @default.
• W2000290232 countsByYear W20002902322017 @default.
• W2000290232 countsByYear W20002902322018 @default.
• W2000290232 countsByYear W20002902322019 @default.
• W2000290232 countsByYear W20002902322021 @default.
• W2000290232 countsByYear W20002902322022 @default.
• W2000290232 crossrefType "journal-article" @default.
• W2000290232 hasAuthorship W2000290232A5005123859 @default.
• W2000290232 hasAuthorship W2000290232A5058823251 @default.
• W2000290232 hasBestOaLocation W20002902321 @default.
• W2000290232 hasConcept C121332964 @default.
• W2000290232 hasConcept C124101348 @default.
• W2000290232 hasConcept C138885662 @default.
• W2000290232 hasConcept C157692150 @default.
• W2000290232 hasConcept C177264268 @default.
• W2000290232 hasConcept C17744445 @default.
• W2000290232 hasConcept C184337299 @default.
• W2000290232 hasConcept C192028432 @default.
• W2000290232 hasConcept C199360897 @default.
• W2000290232 hasConcept C199539241 @default.
• W2000290232 hasConcept C204321447 @default.
• W2000290232 hasConcept C23123220 @default.
• W2000290232 hasConcept C2777026412 @default.
• W2000290232 hasConcept C2777366796 @default.
• W2000290232 hasConcept C2779662365 @default.
• W2000290232 hasConcept C2780224610 @default.
• W2000290232 hasConcept C41008148 @default.
• W2000290232 hasConcept C41895202 @default.
• W2000290232 hasConcept C510870499 @default.
• W2000290232 hasConcept C62520636 @default.
• W2000290232 hasConcept C80444323 @default.
• W2000290232 hasConceptScore W2000290232C121332964 @default.
• W2000290232 hasConceptScore W2000290232C124101348 @default.
• W2000290232 hasConceptScore W2000290232C138885662 @default.
• W2000290232 hasConceptScore W2000290232C157692150 @default.
• W2000290232 hasConceptScore W2000290232C177264268 @default.
• W2000290232 hasConceptScore W2000290232C17744445 @default.
• W2000290232 hasConceptScore W2000290232C184337299 @default.
• W2000290232 hasConceptScore W2000290232C192028432 @default.
• W2000290232 hasConceptScore W2000290232C199360897 @default.
• W2000290232 hasConceptScore W2000290232C199539241 @default.
• W2000290232 hasConceptScore W2000290232C204321447 @default.
• W2000290232 hasConceptScore W2000290232C23123220 @default.
• W2000290232 hasConceptScore W2000290232C2777026412 @default.
• W2000290232 hasConceptScore W2000290232C2777366796 @default.
• W2000290232 hasConceptScore W2000290232C2779662365 @default.
• W2000290232 hasConceptScore W2000290232C2780224610 @default.
• W2000290232 hasConceptScore W2000290232C41008148 @default.
• W2000290232 hasConceptScore W2000290232C41895202 @default.
• W2000290232 hasConceptScore W2000290232C510870499 @default.
• W2000290232 hasConceptScore W2000290232C62520636 @default.
• W2000290232 hasConceptScore W2000290232C80444323 @default.
• W2000290232 hasIssue "1" @default.
• W2000290232 hasLocation W20002902321 @default.
• W2000290232 hasLocation W20002902322 @default.
• W2000290232 hasOpenAccess W2000290232 @default.
• W2000290232 hasPrimaryLocation W20002902321 @default.

• next