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dc.contributor.authorWidom, Jennifer
dc.contributor.authorGupta, Ashish
dc.contributor.authorSagiv, Yehoshua
dc.contributor.authorUllman, Jeffrey D.
dc.date.accessioned2022-11-10T19:05:20Z
dc.date.available2022-11-10T19:05:20Z
dc.date.issued1994
dc.identifier.citationWidom, J. [et al.]. Validating constraints with partial information: research overview. A: "Proceedings of the 5th International Workshop on the Deductive Approach to Information Systems and Databases". Universitat Politècnica de Catalunya. Departament de Llenguatges i Sistemes Informàtics, 1994, p. 375-385.
dc.identifier.urihttp://hdl.handle.net/2117/376075
dc.description.abstractWe are interested in the problem of validating the consistency of integrity constraints when data is modified. In particular, we consider how constraints can be checked with only "partial information". Partial information may include: (1) the constraint specifications only, (2) the constraint specifications and the modified data, or (3) the constraint specifications, the modified data, and portions ofthe existing data. Methods for constraint checking with partía! ínformation can be much more efficient than traditional constraint checking methods ( e.g. because work is done at compile time, or because less data is accessed). Partial information methods also enable constraint checking in scenarios where tradítíonal constraint checking methods fail (e.g. in distributed environments where not all data is accessible). We explain how existing methods and results for query containment and for independeñce can be applied to problems (1) and (2) above, and we give an overview of our research into problem (3).
dc.format.extent11 p.
dc.languageAnglès
dc.language.isoeng
dc.publisherUniversitat Politècnica de Catalunya. Departament de Llenguatges i Sistemes Informàtics
dc.rightsOpen access
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.lcshInformation storage and retrieval systems
dc.subject.lcshManagement information systems
dc.subject.lcshDeductive databases
dc.titleValidating constraints with partial information: research overview
dc.typeConference report
dc.subject.lemacSistemes d'informació per a la gestió
dc.subject.lemacBases de dades
dc.subject.lemacBases de dades deductives
dc.subject.lemacInformació -- Sistemes d'emmagatzematge i recuperació
dc.rights.accessOpen Access
local.citation.publicationNameProceedings of the 5th International Workshop on the Deductive Approach to Information Systems and Databases
local.citation.startingPage375
local.citation.endingPage385


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