136 search results - page 22 / 28 » Query optimizer for spatial join operations |
ICDE
2008
IEEE
14 years 9 months ago
2008
IEEE
We introduce Pulse, a framework for processing continuous queries over models of continuous-time data, which can compactly and accurately represent many real-world activities and p...
ICDE
2007
IEEE
14 years 9 months ago
2007
IEEE
Algorithms that exploit sort orders are widely used to implement joins, grouping, duplicate elimination and other set operations. Query optimizers traditionally deal with sort ord...
VLDB
1994
ACM
13 years 12 months ago
1994
ACM
We address the problem of finding parallel plans for SQL queries using the two-phase approach of join ordering followed by parallelization. We focus on the parallelization phase a...
ICDE
2011
IEEE
12 years 11 months ago
2011
IEEE
— Array database systems are architected for scientific and engineering applications. In these applications, the value of a cell is often imprecise and uncertain. There are at le...
GIS
2010
ACM
13 years 6 months ago
2010
ACM
This paper proposes an efficient, decentralized algorithm for determining the topological relationship between two regions monitored by a geosensor network. Many centralized algo...