FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2045316927> ?p ?o ?g. }

• W2045316927 endingPage "40" @default.
• W2045316927 startingPage "1" @default.
• W2045316927 abstract "Data exchange deals with translating data structured in some source format into data structured in some target format, given a specification of the relationship between the source and the target and possibly constraints on the target; and answering queries over the target in a way that is semantically consistent with the information in the source. Theoretical foundations of data exchange have been actively explored recently. It was also noticed that the standard semantics for query answering in data exchange may lead to counterintuitive or anomalous answers. In the present article, we explain that this behavior is due to the fact that solutions can contain invented information (information that is not related to the source instance), and that the presence of incomplete information in target instances has been ignored. In particular, proper query evaluation techniques for databases with nulls have not been used, and the distinction between closed and open world semantics has not been made. We present a concept of solutions, called CWA-solutions, that is based on the closed world assumption. For data exchange settings without constraints on the target, the space of CWA-solutions has two extreme points: the canonical universal solution (the maximal CWA-solution) and the core of the universal solutions (the minimal CWA-solution), both of them well studied in data exchange. In the presence of constraints on the target, the core of the universal solutions is still the minimal CWA-solution, but there may be no unique maximal CWA-solution. We show how to define the semantics of query-answering taking into account incomplete information, and show that some of the well-known anomalies go away with the new semantics. The article also contains results on the complexity of query-answering, upper approximations to queries (maybe-answers), and various extensions." @default.
• W2045316927 created "2016-06-24" @default.
• W2045316927 creator A5019365566 @default.
• W2045316927 creator A5063696466 @default.
• W2045316927 creator A5069883356 @default.
• W2045316927 date "2011-05-01" @default.
• W2045316927 modified "2023-09-26" @default.
• W2045316927 title "Closed world data exchange" @default.
• W2045316927 cites W1511811096 @default.
• W2045316927 cites W1964042427 @default.
• W2045316927 cites W1965776893 @default.
• W2045316927 cites W1966294080 @default.
• W2045316927 cites W1968327952 @default.
• W2045316927 cites W1969053136 @default.
• W2045316927 cites W1979514837 @default.
• W2045316927 cites W1989783863 @default.
• W2045316927 cites W1990391007 @default.
• W2045316927 cites W1991388416 @default.
• W2045316927 cites W1993268751 @default.
• W2045316927 cites W1998510030 @default.
• W2045316927 cites W2003017562 @default.
• W2045316927 cites W2012791990 @default.
• W2045316927 cites W2013096722 @default.
• W2045316927 cites W2016785840 @default.
• W2045316927 cites W2028222220 @default.
• W2045316927 cites W2029335800 @default.
• W2045316927 cites W2050171146 @default.
• W2045316927 cites W2057069578 @default.
• W2045316927 cites W2058366603 @default.
• W2045316927 cites W2066837227 @default.
• W2045316927 cites W2073279331 @default.
• W2045316927 cites W2078047958 @default.
• W2045316927 cites W2080430146 @default.
• W2045316927 cites W2098213459 @default.
• W2045316927 cites W2102702756 @default.
• W2045316927 cites W2106039833 @default.
• W2045316927 cites W2124061668 @default.
• W2045316927 cites W2130133338 @default.
• W2045316927 cites W2134206951 @default.
• W2045316927 cites W2137208394 @default.
• W2045316927 cites W2147973254 @default.
• W2045316927 cites W2153320571 @default.
• W2045316927 cites W2159686758 @default.
• W2045316927 cites W2160983447 @default.
• W2045316927 cites W2162294668 @default.
• W2045316927 cites W2163009148 @default.
• W2045316927 cites W2165864074 @default.
• W2045316927 cites W2997050146 @default.
• W2045316927 cites W4256119157 @default.
• W2045316927 cites W4298043722 @default.
• W2045316927 doi "https://doi.org/10.1145/1966385.1966392" @default.
• W2045316927 hasPublicationYear "2011" @default.
• W2045316927 type Work @default.
• W2045316927 sameAs 2045316927 @default.
• W2045316927 citedByCount "28" @default.
• W2045316927 countsByYear W20453169272012 @default.
• W2045316927 countsByYear W20453169272013 @default.
• W2045316927 countsByYear W20453169272014 @default.
• W2045316927 countsByYear W20453169272015 @default.
• W2045316927 countsByYear W20453169272016 @default.
• W2045316927 countsByYear W20453169272017 @default.
• W2045316927 countsByYear W20453169272018 @default.
• W2045316927 countsByYear W20453169272020 @default.
• W2045316927 countsByYear W20453169272021 @default.
• W2045316927 countsByYear W20453169272022 @default.
• W2045316927 countsByYear W20453169272023 @default.
• W2045316927 crossrefType "journal-article" @default.
• W2045316927 hasAuthorship W2045316927A5019365566 @default.
• W2045316927 hasAuthorship W2045316927A5063696466 @default.
• W2045316927 hasAuthorship W2045316927A5069883356 @default.
• W2045316927 hasBestOaLocation W20453169272 @default.
• W2045316927 hasConcept C101097943 @default.
• W2045316927 hasConcept C111472728 @default.
• W2045316927 hasConcept C138885662 @default.
• W2045316927 hasConcept C15845906 @default.
• W2045316927 hasConcept C184337299 @default.
• W2045316927 hasConcept C189693848 @default.
• W2045316927 hasConcept C199360897 @default.
• W2045316927 hasConcept C2164484 @default.
• W2045316927 hasConcept C23123220 @default.
• W2045316927 hasConcept C41008148 @default.
• W2045316927 hasConcept C76155785 @default.
• W2045316927 hasConcept C77088390 @default.
• W2045316927 hasConcept C80444323 @default.
• W2045316927 hasConceptScore W2045316927C101097943 @default.
• W2045316927 hasConceptScore W2045316927C111472728 @default.
• W2045316927 hasConceptScore W2045316927C138885662 @default.
• W2045316927 hasConceptScore W2045316927C15845906 @default.
• W2045316927 hasConceptScore W2045316927C184337299 @default.
• W2045316927 hasConceptScore W2045316927C189693848 @default.
• W2045316927 hasConceptScore W2045316927C199360897 @default.
• W2045316927 hasConceptScore W2045316927C2164484 @default.
• W2045316927 hasConceptScore W2045316927C23123220 @default.
• W2045316927 hasConceptScore W2045316927C41008148 @default.
• W2045316927 hasConceptScore W2045316927C76155785 @default.
• W2045316927 hasConceptScore W2045316927C77088390 @default.
• W2045316927 hasConceptScore W2045316927C80444323 @default.
• W2045316927 hasFunder F4320320879 @default.

• next