128 search results - page 2 / 26 » Plan Selection Based on Query Clustering |
EDBT
2006
ACM
14 years 5 months ago
2006
ACM
In this paper we present a novel approach for estimating the selectivity of XML twig queries. Such a technique is useful for approximate query answering as well as for determining...
SSD
2005
Springer
13 years 10 months ago
2005
Springer
Abstract. Query optimization is an important functionality of modern database systems and often based on estimating the selectivity of queries before actually executing them. Well-...
SIGMOD
2000
ACM
13 years 9 months ago
2000
ACM
Testing an SQL database system by running large sets of deterministic or stochastic SQL statements is common practice in commercial database development. However, code defects oft...
ADBIS
2006
Springer
13 years 11 months ago
2006
Springer
materialized view selection is a non-trivial task. Hence, its complexity must be reduced. A judicious choice of views must be costdriven and influenced by the workload experienced...
BDA
2004
13 years 6 months ago
2004
We present the path sequence storage model, a new logical model for storing XML documents. This model partitions XML data and content according to the document paths; and uses orde...