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Actualització de vistes en bases de dades relacionals: l'estat de la qüestió

Authors: Teniente López, Ernest;

Actualització de vistes en bases de dades relacionals: l'estat de la qüestió

Abstract

Aquest article és una síntesi dels mètodes proposats fins el moment actual per a resoldre el problema de l'actualització de vistes en bases de dades relacionals. Es distingeixen bàsicament dos enfocaments per a resoldre aquest problema. El primer suggereix que les vistes es tractin com a tipus abstractes de dades, de tal manera que la definició de la vista inclogui una descripció del conjunt d'actualitzacions de vista permeses, conjuntament amb la seva traducció. El segon enfocament consisteix en definir un traductor automàtic que a partir de la definició de la vista, l'actualització de vista demanada i l'estat actual de la base de dades obté el conjunt de modificacions de les relacions bàsiques que satisfan la petició.

This paper presents a synthesis of the methods proposed up to date to solve the view update problem in relational databases. Two basic approaches have been proposed to solve this problem. The first one suggests treating views as abstract data types so that the definition of the view includes all permissible view updates together with their translation. The second approach is to define a translator. Inputs to the translator are a view definition, a view update request and the current database. The output is the database update that translate the view update.

Country
Spain
Keywords

Bases de dades relacionals, :Informàtica [Àrees temàtiques de la UPC], Àrees temàtiques de la UPC::Informàtica, Relational databases

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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