Sciweavers

2987 search results - page 469 / 598
» Multiobjective Query Optimization
Sort
View
AP2PC
2003
Springer
15 years 6 months ago
Fuzzy Cost Modeling for Peer-to-Peer Systems
The objective of query optimizers is to select a good execution plan for a given query. In a distributed system, it is crucial for a query optimizer to have effective remote cost e...
Bo Ling, Wee Siong Ng, Yanfeng Shu, Aoying Zhou
134
Voted
EDBT
2010
ACM
189views Database» more  EDBT 2010»
15 years 6 months ago
Efficient physical operators for cost-based XPath execution
The creation of a generic and modular query optimization and processing infrastructure can provide significant benefits to XML data management. Key pieces of such an infrastructur...
Haris Georgiadis, Minas Charalambides, Vasilis Vas...
CIKM
1999
Springer
15 years 6 months ago
Requirement-Based Data Cube Schema Design
On-line analytical processing (OLAP) requires e cient processing of complex decision support queries over very large databases. It is well accepted that pre-computed data cubes ca...
David Wai-Lok Cheung, Bo Zhou, Ben Kao, Hongjun Lu...
SIGMOD
1998
ACM
96views Database» more  SIGMOD 1998»
15 years 5 months ago
Wavelet-Based Histograms for Selectivity Estimation
Query optimization is an integral part of relational database management systems. One important task in query optimization is selectivity estimation, that is, given a query P, we ...
Yossi Matias, Jeffrey Scott Vitter, Min Wang
146
Voted
KRDB
1997
167views Database» more  KRDB 1997»
15 years 3 months ago
Materialized Views and Data Warehouses
A data warehouse is a redundant collection of data replicated from several possibly distributed and loosely coupled source databases, organized to answer OLAP queries. Relational ...
Nick Roussopoulos