1004 search results - page 138 / 201 » Safe Constraint Queries |
GIS
1999
ACM
14 years 1 months ago
1999
ACM
Spatial indexes, such as the PMR quadtree, are important in spatial databases for efficient execution of queries involving spatial constraints, especially when the queries involv...
ICDT
1997
ACM
14 years 28 days ago
1997
ACM
We develop a new schema for unstructured data. Traditional schemas resemble the type systems of programming languages. For unstructured data, however, the underlying type may be mu...
FLAIRS
2004
13 years 10 months ago
2004
In this paper, we propose an agent-centric approach to resource description and selection in a multiagent information retrieval (IR). In the multiagent system, each agent learns f...
ICDE
2010
IEEE
13 years 9 months ago
2010
IEEE
— Autonomous index management in native XML DBMSs has to address XML’s flexibility and storage mapping features, which provide a rich set of indexing options. Change of worklo...
IJCGA
2000
13 years 8 months ago
2000
We present e cient algorithms for several instances of the following facility location problem. Facilities and demand sites are represented as points in the plane. Place k obnoxio...