Analytical Processing Over XML and XLink

Paulo Caetano da Silva, Valéria Cesário Times, Ricardo Rodrigues Ciferri and Cristina Dutra de Aguiar Ciferri
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Paulo Caetano da Silva: Salvador University and Federal University of Pernambuco, Brazil
Valéria Cesário Times: Federal University of Pernambuco, Brazil
Ricardo Rodrigues Ciferri: Federal University of São Carlos, Brazil
Cristina Dutra de Aguiar Ciferri: University of São Paulo, Brazil

International Journal of Data Warehousing and Mining (IJDWM), 2012, vol. 8, issue 1, 52-92

Abstract: Current commercial and academic OLAP tools do not process XML data that contains XLink. Aiming at overcoming this issue, this paper proposes an analytical system composed by LMDQL, an analytical query language. Also, the XLDM metamodel is given to model cubes of XML documents with XLink and to deal with syntactic, semantic and structural heterogeneities commonly found in XML documents. As current W3C query languages for navigating in XML documents do not support XLink, XLPath is discussed in this article to provide features for the LMDQL query processing. A prototype system enabling the analytical processing of XML documents that use XLink is also detailed. This prototype includes a driver, named sql2xquery, which performs the mapping of SQL queries into XQuery. To validate the proposed system, a case study and its performance evaluation are presented to analyze the impact of analytical processing over XML/XLink documents.

Date: 2012
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