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dc.contributor.authorΒασιλειάδης, Πάνοςel_GR
dc.contributor.authorΓεωργαντάς, Πάνοςel_GR
dc.contributor.authorΤερροβίτης, Μανώληςel_GR
dc.contributor.authorΣκιαδόπουλος, Σπύροςel_GR
dc.contributor.authorΣιμήτσης, Άλκηςel_GR
dc.contributor.authorVassiliadis, Panosen
dc.contributor.authorGeorgantas, Panosen
dc.contributor.authorSkiadopoulos, Nikosen
dc.contributor.authorSimitsis, Alkisen
dc.contributor.authorTerrovitis, Manolisen
dc.descriptionΠεριέχει τη περίληψηel_GR
dc.description.abstractExtraction–transformation–loading (ETL) tools are pieces of software responsible for the extraction of data from several sources, their cleansing, customization and insertion into a data warehouse. In this paper, we delve into the logical design of ETL scenarios and provide a generic and customizable framework in order to support the DW designer in his task. First, we present a metamodel particularly customized for the definition of ETL activities. We follow a workflow-like approach, where the output of a certain activity can either be stored persistently or passed to a subsequent activity. Also, we employ a declarative database programming language, LDL, to define the semantics of each activity. The metamodel is generic enough to capture any possible ETL activity. Nevertheless, in the pursuit of higher reusability and flexibility, we specialize the set of our generic metamodel constructs with a palette of frequently used ETL activities, which we call templates. Moreover, in order to achieve a uniform extensibility mechanism for this library of built-ins, we have to deal with specific language issues. Therefore, we also discuss the mechanics of template instantiation to concrete activities. The design concepts that we introduce have been implemented in a tool, arktos ii, which is also presented.en
dc.sourceInformation Systems. Nov 2005, Vol. 30 Issue 7, p492-525. 34p.en
dc.sourceLibrary, Information Science & Technology Abstracts (LISTA)en
dc.titleA generic and customizable framework for the design of ETL scenariosen
dc.subject.uncontrolledtermData Managementen
dc.subject.uncontrolledtermData warehousingen
dc.subject.uncontrolledtermComputer softwareen
dc.subject.uncontrolledtermIndustrial designen
dc.subject.JITAΤεχνολογίες πληροφόρησης και τεχνολογίες βιβλιοθηκών, Λογισμικόel_GR
dc.subject.JITAInformation technology and library technology, Softwareen

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