Sciweavers

735 search results - page 34 / 147
» Query Optimization In Compressed Database Systems
Sort
View
ICDE
2005
IEEE
139views Database» more  ICDE 2005»
14 years 9 months ago
Compressing Bitmap Indices by Data Reorganization
Many scientific applications generate massive volumes of data through observations or computer simulations, bringing up the need for effective indexing methods for efficient stora...
Ali Pinar, Tao Tao, Hakan Ferhatosmanoglu
ICDE
2005
IEEE
114views Database» more  ICDE 2005»
14 years 1 months ago
VAMANA - A Scalable Cost-Driven XPath Engine
¡ Several systems have recently been proposed for the evaluation of XPath expressions. However, none of these systems have demonstrated both scalability with large document sizes ...
Venkatesh Raghavan, Kurt W. Deschler, Elke A. Rund...
ICDE
2005
IEEE
122views Database» more  ICDE 2005»
14 years 1 months ago
A Cost-Space Approach to Distributed Query Optimization in Stream Based Overlays
Abstract— Distributed stream-based applications, such as continuous query systems, have network scale and time characteristics that challenge traditional distributed query optimi...
Jeffrey Shneidman, Peter R. Pietzuch, Matt Welsh, ...
COOPIS
2004
IEEE
13 years 11 months ago
Refresco: Improving Query Performance Through Freshness Control in a Database Cluster
Abstract. We consider the use of a cluster system for managing autonomous databases. In order to improve the performance of read-only queries, we strive to exploit user requirement...
Cécile Le Pape, Stéphane Ganç...
ICDE
2008
IEEE
215views Database» more  ICDE 2008»
14 years 9 months ago
Fast and Simple Relational Processing of Uncertain Data
This paper introduces U-relations, a succinct and purely relational representation system for uncertain databases. U-relations support attribute-level uncertainty using vertical pa...
Lyublena Antova, Thomas Jansen, Christoph Koch, Da...