A Fuzzy Language for Querying Reconciliated Views

2nd International Workshop on Databases, Documents, and Information Fusion

Silvana Castano ; Danilo Montesi ; Alberto Trombetta

Others  :  http://CEUR-WS.org/Vol-124/05trombetta.pdf
PID  :  1657

来源: CEUR

【 摘 要 】

The Global-As-View approach in data integration system has focused on the (semi-) automatic definition of a global schema starting from a given set of known information sources. In this paper, we investigate how to employ concepts and techniques to model imprecision in generating the global schema and in specifying the mappings. We propose a language for defining fuzzy-based mappings between source and global schemas. Such mappings explicitly take into account the similarities occurring between global and source schemas, thus allowing to discard the items with low similarity and to express the relevances that different sources may have in populating the global schema. The proposed language is applied in the framework of the ARTEMIS/MOMIS integration system.