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Preservation of Data Warehouses: Extending the SIARD System with DWXML Language and Tools
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Author(s): Carlos Aldeias (University of Porto, Portugal), Gabriel David (University of Porto, Portugal)and Cristina Ribeiro (University of Porto, Portugal)
Copyright: 2013
Pages: 24
Source title:
Innovations in XML Applications and Metadata Management: Advancing Technologies
Source Author(s)/Editor(s): José Carlos Ramalho (Universidade do Minho, Portugal), Alberto Simões (Universidade do Minho, Portugal)and Ricardo Queirós (CRACS & INESC-Porto LA, Faculdade de Ciências, Universidade do Porto, Portugal)
DOI: 10.4018/978-1-4666-2669-0.ch008
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Abstract
Data warehouses are used in many application domains, and there is no established method for their preservation. A data warehouse can be implemented in multidimensional structures or in relational databases that represent the dimensional model concepts in the relational model. The focus of this work is on describing the dimensional model of a data warehouse and migrating it to an XML model, in order to achieve a long-term preservation format. This chapter presents the definition of the XML structure that extends the SIARD format used for the description and archive of relational databases, enriching it with a layer of metadata for the data warehouse components. Data Warehouse Extensible Markup Language (DWXML) is the XML language proposed to describe the data warehouse. An application that combines the SIARD format and the DWXML metadata layer supports the XML language and helps to acquire the relevant metadata for the warehouse and to build the archival format.
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