Cooperative Information Systems, IFCIS International Conference on (1996)
June 19, 1996 to June 21, 1996
L. Liu , Dept. of Comput. Sci., Alberta Univ., Edmonton, Alta., Canada
C. Pu , Dept. of Comput. Sci., Alberta Univ., Edmonton, Alta., Canada
Y. Lee , Dept. of Comput. Sci., Alberta Univ., Edmonton, Alta., Canada
The authors propose a query mediation framework to support customizable information gathering across heterogeneous and autonomous information sources. Instead of an integrated (and static) global schema, they propose an adaptive approach to interoperability which allows information consumers to represent their queries based on the customized personal view rather than at system-defined integrated view. The query mediation framework consists of five steps: query routing, query decomposition, parallel access plan generation, subquery translation and execution, and query result assembly. Concrete examples illustrate the challenges arising from heterogeneity in these five steps and how the framework scales up as the number of information sources grow and evolve.
distributed databases; adaptive query mediation; heterogeneous information sources; customizable information gathering; autonomous information sources; interoperability; information consumers; customized personal view; query mediation framework; query routing; query decomposition; parallel access plan generation; subquery translation; subquery execution; query result assembly
Y. Lee, L. Liu and C. Pu, "An adaptive approach to query mediation across heterogeneous information sources," Cooperative Information Systems, IFCIS International Conference on(COOPIS), Brussels, Belgium, 1996, pp. 144.