39 search results - page 2 / 8 » Top-k selection queries over relational databases: Mapping s... |
DKE
2008
13 years 5 months ago
2008
In many database applications, there are opportunities for multiple top-N queries to be evaluated at the same time. Often it is more cost effective to evaluate multiple such queri...
ICDE
2002
IEEE
2002
IEEE
Design and Evaluation of Alternative Selection Placement Strategies in Optimizing Continuous Queries
14 years 6 months ago
In this paper, we design and evaluate alternative selection placement strategies for optimizing a very large number of continuous queries in an Internet environment. Two grouping ...
ICDE
1998
IEEE
14 years 6 months ago
1998
IEEE
Algebraic transformation and optimization techniques have been the method of choice in relational query execution, but applying them in OODBMS is difficult due to the complexity o...
SSDBM
2009
IEEE
13 years 11 months ago
2009
IEEE
Scientific experiments produce large volumes of data represented as complex objects that describe independent events such as particle collisions. Scientific analyses can be express...
DASFAA
2007
IEEE
13 years 8 months ago
2007
IEEE
Abstract. In this paper, we present a novel ordered XPATH evaluation in treeunaware RDBMS. The novelties of our approach lies in the followings. (a) We propose a novel XML storage ...