An ETL Tool Based on Semantic Analysis of Schemata and Instances

  • Authors:
  • Sonia Bergamaschi;Francesco Guerra;Mirko Orsini;Claudio Sartori;Maurizio Vincini

  • Affiliations:
  • DII, Università di Modena e Reggio Emilia, Italy;DEA, Università di Modena e Reggio Emilia, Italy;DII, Università di Modena e Reggio Emilia, Italy;DEIS, Università di Bologna, Italy;DII, Università di Modena e Reggio Emilia, Italy

  • Venue:
  • KES '09 Proceedings of the 13th International Conference on Knowledge-Based and Intelligent Information and Engineering Systems: Part II
  • Year:
  • 2009

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Abstract

In this paper we propose a system supporting the semi-automatic definition of inter-attribute mappings and transformation functions used as an ETL tool in a data warehouse project. The tool supports both schema level analysis, exploited for the mapping definitions amongst the data sources and the data warehouse, and instance level operations, exploited for defining transformation functions that integrate data coming from multiple sources in a common representation. Our proposal couples and extends the functionalities of two previously developed systems: the MOMIS integration system and the RELEVANT data analysis system.