Sciweavers

332 search results - page 40 / 67
» Materialized Views and Data Warehouses
Sort
View
120
Voted
HPDC
2010
IEEE
15 years 26 days ago
Distributing the power of OLAP
In this paper we present the Brown Dwarf, a distributed system designed to efficiently store, query and update multidimensional data over an unstructured Peer-to-Peer overlay, wit...
Katerina Doka, Dimitrios Tsoumakos, Nectarios Kozi...
VLDB
2001
ACM
108views Database» more  VLDB 2001»
15 years 4 months ago
Hyperqueries: Dynamic Distributed Query Processing on the Internet
In this paper we propose a new framework for dynamic distributed query processing based on so-called HyperQueries which are essentially query evaluation sub-plans “sitting behin...
Alfons Kemper, Christian Wiesner
COOPIS
2002
IEEE
15 years 4 months ago
View Propagation and Inconsistency Detection for Cooperative Mobile Agents
Mobile agents are autonomous programs that migrate from one machine to another within a network on behalf of a client, thus, they are ideal for mobile computing environments since ...
Susan Weissman Lauzac, Panos K. Chrysanthis
ICDE
2007
IEEE
145views Database» more  ICDE 2007»
16 years 1 months ago
Rewriting Regular XPath Queries on XML Views
We study the problem of answering queries posed on virtual views of XML documents, a problem commonly encountered when enforcing XML access control and integrating data. We approa...
Wenfei Fan, Floris Geerts, Xibei Jia, Anastasios K...
SIGMOD
2007
ACM
170views Database» more  SIGMOD 2007»
15 years 12 months ago
Cardinality estimation using sample views with quality assurance
Accurate cardinality estimation is critically important to high-quality query optimization. It is well known that conventional cardinality estimation based on histograms or simila...
Per-Åke Larson, Wolfgang Lehner, Jingren Zho...