Title :
Answering XPath Queries in Virtual XML Data Integration System
Author_Institution :
Dept. of Comput. & Inf. Technol., Fudan Univ., Shanghai
Abstract :
When data sources are virtually integrated, there is no materialized global instance available. In this paper, we consider the problem of computing answers when queries are posed to virtual XML data integration systems, which are specified following the local-as-view approach. In the view definition, edge-path mapping and data-value binding are supported. Given an XPath query on the global system, we provide a method to compute query answers based on the underlying data sources by reversing rules in the view definition.
Keywords :
XML; data integrity; query processing; XPath queries; computing answers; data sources; data-value binding; edge-path mapping; local-as-view approach; virtual XML data integration system; Cities and towns; Computer interfaces; Computer science; Data models; Information technology; Software engineering; Tree data structures; XML; XML; integration; query;
Conference_Titel :
Computer Science and Software Engineering, 2008 International Conference on
Conference_Location :
Wuhan, Hubei
Print_ISBN :
978-0-7695-3336-0
DOI :
10.1109/CSSE.2008.579
