3269 search results - page 302 / 654 » Query Optimization for XML |
118
click to vote
VLDB
1998
ACM
15 years 9 months ago
1998
ACM
In a recent paper, we proposed adding a STOP AFTER clause to SQL to permit the cardinality of a query result to be explicitly limited by query writers and query tools. We demonstr...
153
Voted
DAWAK
2006
Springer
15 years 8 months ago
2006
Springer
We consider the problem of concurrent execution of multiple frequent itemset queries. If such data mining queries operate on overlapping parts of the database, then their overall I...
130
Voted
BNCOD
1997
15 years 6 months ago
1997
With the substantial change of declarative query languages from plain SQL to the so-called \object SQLs", in particular OQL, there has surprisingly been not much change in the...
246
click to vote
ICDE
2003
IEEE
16 years 6 months ago
2003
IEEE
Query optimizers use base-table statistics to derive statistics on the sub-plans that are enumerated during optimization. In practice, traditional optimizers rely on a number of s...
180
click to vote
ADHOCNOW
2008
Springer
15 years 6 months ago
2008
Springer
This paper presents a novel method for optimizing sliding window based continuous queries. We deal with two categories of aggregation operations: stepwise aggregation (e.g. COUNT) ...