1933 search results - page 4 / 387 » Query Containment Using Views |
ICDT
2005
ACM
15 years 2 months ago
2005
ACM
We study the problem of rewriting queries using views in the presence of access patterns, integrity constraints, disjunction, and negation. We provide asymptotically optimal algori...
154
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VLDB
2006
ACM
15 years 9 months ago
2006
ACM
In this paper we study the following problem. Given a database and a set of queries, we want to find a set of views that can compute the answers to the queries, such that the amoun...
VLDB
2005
ACM
15 years 2 months ago
2005
ACM
As a simple XML query language but with enough expressive power, XPath has become very popular. To expedite evaluation of XPath queries, we consider the problem of rewriting XPath...
104
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SIGMOD
2001
ACM
15 years 9 months ago
2001
ACM
Materialized views have been found to be very effective at speeding up queries, and are increasingly being supported by commercial databases and data warehouse systems. However, w...
ADBIS
2004
Springer
15 years 2 months ago
2004
Springer
Abstract. Query rewriting method is proposed for the heterogeneous information integration infrastructure formed by the subject mediator environment. Local as View (LAV) approach t...