2004 IEEE/WIC/ACM International Conference on Web Intelligence (WI'04) Bucket-Based Query Rewriting with Disjunctive Data Source Beijing, China September 20-September 24 ISBN: 0-7695-2100-2
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/WI.2004.10162
Many algorithms for query rewriting using views have been proposed. Most of them are used for rewriting conjunctive queries with conjunctive views only. Only one inverse rule-based rewriting algorithm has been presented to deal with query rewriting with disjunctive views, in which a set of disjunctive inverse rules are created and used to generate the query rewritings. However, there has no been bucket-based algorithm for this issue. In this paper we apply the ideas of the previous bucket-based algorithms to deal with query rewriting using views in the presence of disjunctions in view definitions. We create a set of buckets over either a conjunctive view or a disjunctive view. Specially, when a bucket is over a disjunctive view, we present a method to remove the tuples that are in the view but not required by a given query. The rewritings obtained by our algorithm are contained in the original query.
Citation:
Qingyuan Bai, Jun Hong, Michael F. McTear, Hui Wang, "Bucket-Based Query Rewriting with Disjunctive Data Source," wi, pp.566-569, 2004 IEEE/WIC/ACM International Conference on Web Intelligence (WI'04), 2004 Usage of this product signifies your acceptance of the Terms of Use. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||