27756 search results - page 58 / 5552 » Process Query Systems |
GIS
2007
ACM
14 years 1 months ago
2007
ACM
Spatial join is an important yet costly operation in spatial databases. In order to speed up the execution of a spatial join, the input tables are often indexed based on their spa...
ICDE
2002
IEEE
14 years 11 months ago
2002
IEEE
We study the problem of query optimization in federated relational database systems. The nature of federated databases explicitly decouples many aspects of the optimization proces...
ICDE
2008
IEEE
14 years 11 months ago
2008
IEEE
We study the scalable management of XML data in P2P networks based on distributed hash tables (DHTs). We identify performance limitations in this context, and propose an array of t...
IDEAS
2002
IEEE
14 years 2 months ago
2002
IEEE
Based on the recent progress of digital cartography, global positioning systems (GPSs), and hand-held devices, there are growing needs of technology that provides neighborhood inf...
RML
2002
13 years 9 months ago
2002
In E-commerce processes, various rules and constraints regarding product specifications, pricing, terms and conditions are exchanged between vendors and buyers. Developing a forma...