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Global semantic query optimizer in multidatabase systems
Author(s)
Rachburi, Nachirat
Chittayasothorn, Suphamit
Date Issued
December 1, 2006
Type
Conference Paper
Abstract
At present, multidatabase systems provide access to local databases via gateway protocols. Users have to be aware of product-specific features of local database management systems. Query optimization in multidatabase systems are normally based on statistics collected at local sites. This paper describes a multidatabase system that supports global schemas, fragmentation schemas and allocation schemas together with the semantic query optimization capability. The system also supports data manipulations on global databases with mixed fragmentation. The semantic query optimization feature proved to be very useful and helps reduce response time of global queries.
Citation
Wmsci 2006 the 10th World Multi Conference on Systemics Cybernetics and Informatics Jointly with the 12th International Conference on Information Systems Analysis and Synthesis Isas 2006 Proc, 1, 81-85, 2006