Artículo de Publicación Periódica:
Schema evolution in multiversion data warehouses

dc.contributor.authorAhmed, Waqas
dc.contributor.authorVaisman, Alejandro Ariel
dc.contributor.authorZimányi, Esteban
dc.contributor.authorWrembel, Robert
dc.date.accessioned2022-05-23T17:40:46Z
dc.date.available2022-05-23T17:40:46Z
dc.date.issued2021
dc.description.abstract"Data warehouses (DWs) evolve in both their content and schema due to changes of user requirements, business processes, or external sources to name a few. Although multiple approaches using temporal and/or multiversion DWs have been proposed to handle these changes, an efficient solution for this problem is still lacking. The authors' approach is to separate concerns and use temporal DWs to deal with content changes, and multiversion DWs to deal with schema changes. To address the former, previously, they have proposed a temporal multidimensional (MD) model. In this paper, they propose a multiversion MD model for schema evolution to tackle the latter problem. The two models complement each other and allow managing both content and schema evolution. In this paper, the semantics of schema modification operators (SMOs) to derive various schema versions are given. It is also shown how online analytical processing (OLAP) operations like roll-up work on the model. Finally, the mapping from the multiversion MD model to a relational schema is given along with OLAP operations in standard SQL."en
dc.identifier.issn1548-3924
dc.identifier.urihttp://ri.itba.edu.ar/handle/123456789/3889
dc.language.isoenen
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/10.4018/IJDWM.2021100101
dc.subjectALMACENES DE DATOSes
dc.subjectOLAPes
dc.titleSchema evolution in multiversion data warehousesen
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.

Archivos

Bloque original
Mostrando 1 - 1 de 1
Cargando...
Miniatura
Nombre:
Ahmed_2021_ING_INFORMATICA.pdf
Tamaño:
1.01 MB
Formato:
Adobe Portable Document Format
Descripción:
Articulo_Ahmed
Bloque de licencias
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
license.txt
Tamaño:
1.6 KB
Formato:
Item-specific license agreed upon to submission
Descripción: