artículo de publicación periódica.page.titleprefix
A temporal multidimensional model and OLAP operators

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dc.contributor.authorAhmed, Waqas
dc.contributor.authorZimányi, Esteban
dc.contributor.authorVaisman, Alejandro Ariel
dc.contributor.authorWrembel, Robert
dc.date.accessioned2020-12-17T13:24:06Z
dc.date.available2020-12-17T13:24:06Z
dc.date.issued2020
dc.description.abstract"Usually, data in data warehouses (DWs) are stored using the notion of the multidimensional (MD) model. Often, DWs change in content and structure due to several reasons, like, for instance, changes in a business scenario or technology. For accurate decision-making, a DW model must allow storing and analyzing time-varying data. This paper addresses the problem of keeping track of the history of the data in a DW. For this, first, a formalization of the traditional MD model is proposed and then extended as a generalized temporal MD model. The model comes equipped with a collection of typical online analytical processing (OLAP) operations with temporalsemantics, which isformalized for the four classic operations, namely roll-up, dice, project, and drill-across. Finally, the mapping from the generalized temporal model into a relational schema is presented together with an implementation of the temporal OLAP operations in standard SQL."en
dc.identifier.urihttp://ri.itba.edu.ar/handle/123456789/3255
dc.language.isoenen
dc.relationinfo:eu-repo/semantics/reference/doi/10.4018/IJDWM.2020100107
dc.subjectALMACENES DE DATOSes
dc.subjectOLAPen
dc.subjectBASE DE DATOSes
dc.titleA temporal multidimensional model and OLAP operatorsen
dc.typeArtículos de Publicaciones Periódicases
dc.typeinfo:eu-repo/semantics/publishedVersion
dspace.entity.typeArtículo de Publicación Periódica
itba.description.filiationFil: Ahmed, Waqas. Université Libre de Bruxelles; Bélgica.
itba.description.filiationFil: Zimányi, Esteban. Université Libre de Bruxelles; Bélgica.
itba.description.filiationFil: Vaisman, Alejandro Ariel. Instituto Tecnológico de Buenos Aires, Argentina.
itba.description.filiationFil: Wrembel, Robert. Poznan University of Technology; Polonia.

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