Ix-cubes: iceberg cubes for data warehousing and olap on xml data

Authors:
Fianny Ming-fei Jiang;Jian Pei;Ada Wai-chee Fu
Affiliations:
Chinese University of Hong Kong, Hong Kong, Hong Kong;Simon Fraser University, Vancouver, Canada;Chinese University of Hong Kong, Hong Kong, Hong Kong
Venue:
Proceedings of the sixteenth ACM conference on Conference on information and knowledge management
Year:
2007

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Abstract

With increasing amount of data being stored in XML format, OLAP queries over these data become important. OLAP queries have been well studied in the relational database systems. However, the evaluation of OLAP queries over XML data is not a trivial extension of the relational solutions, especially when a schema is not available. In this paper, we introduce the IX-cube (Iceberg XML cube) over XML data to tackle the problem. We extend OLAP operations to XML data. We also develop efficient approaches to IX-Cube computation and OLAP query evaluation using IX-cubes.