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.
An ETL tool based on semantic analysis of schemata and instances / Bergamaschi, Sonia; Guerra, Francesco; Orsini, Mirko; C., Sartori; Vincini, Maurizio. - STAMPA. - 5712:2(2009), pp. 58-65. (Intervento presentato al convegno 13th International Conference on Knowledge-Based and Intelligent Information and Engineering Systems, KES 2009 tenutosi a Santiago, chl nel September 28-30, 2009) [10.1007/978-3-642-04592-9_8].
An ETL tool based on semantic analysis of schemata and instances
BERGAMASCHI, Sonia;GUERRA, Francesco;ORSINI, Mirko;VINCINI, Maurizio
2009
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.
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