3225 search results - page 83 / 645 » Query Optimization by Stored Queries |
ICDE
2007
IEEE
14 years 10 months ago
2007
IEEE
Optimizing nested queries is an intricate problem. It becomes even harder if in a nested query the linking predicate or the correlation predicate occurs disjunctively. We present ...
EDBT
2006
ACM
14 years 9 months ago
2006
ACM
Abstract. We present in this paper a new model for representing probabilistic information in a semi-structured (XML) database, based on the use of probabilistic event variables. Th...
VLDB
2005
ACM
14 years 2 months ago
2005
ACM
In this paper, we propose a method for maintaining a semantic cache of materialized XPath views. The cached views include queries that have been previously asked, and additional s...
PODS
2004
ACM
14 years 9 months ago
2004
ACM
VLDB
2004
ACM
14 years 2 months ago
2004
ACM
Progressive Optimization (POP) is a technique to make query plans robust, and minimize need for DBA intervention, by repeatedly re-optimizing a query during runtime if the cardina...