DocumentCode
2528776
Title
Query optimization in information integration for queries involving aggregation and group by
Author
Alkaldi, Wejdan ; Sadri, Fereidoon
Author_Institution
Dept. of Inf. Technol., King Saud Univ., Riyadh, Saudi Arabia
fYear
2011
fDate
26-28 Sept. 2011
Firstpage
351
Lastpage
358
Abstract
This paper addresses the efficient processing of queries involving aggregation and group-by in the semantic-model approach to information integration. Query processing algorithms materialization, subqueries, and wrapper have been extended for such aggregate queries. Algorithms have been presented for two cases: In the first case information at different sources are disjoint, while in the second case information sources may contain overlapping information.
Keywords
optimisation; query processing; semantic Web; information integration; information sources; overlapping information; query aggregation; query optimization; semantic model; Aggregates; Cities and towns; Data mining; Educational institutions; Optimization; Query processing; XML; Information integration; overlapping information; query optimization;
fLanguage
English
Publisher
ieee
Conference_Titel
Digital Information Management (ICDIM), 2011 Sixth International Conference on
Conference_Location
Melbourn, QLD
ISSN
Pending
Print_ISBN
978-1-4577-1538-9
Type
conf
DOI
10.1109/ICDIM.2011.6093349
Filename
6093349
Link To Document