Query optimization in XML based information integration for queries involving aggregation and group by.
- UNCG Author/Contributor (non-UNCG co-authors, if there are any, appear on document)
- Wejdan Abdullah Alkaldi (Creator)
- Institution
- The University of North Carolina at Greensboro (UNCG )
- Web Site: http://library.uncg.edu/
- Advisor
- Fereidoon Sadri
Abstract: This thesis addresses optimization and 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.
Query optimization in XML based information integration for queries involving aggregation and group by.
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Created on 12/1/2009
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Additional Information
- Publication
- Thesis
- Language: English
- Date: 2009
- Keywords
- Information integration, Overlapping information, Query optimization
- Subjects
- Computer algorithms.
- Electronic data processing.
- Querying (Computer science)
- XML (Document markup language)