1430 search results - page 87 / 286 » Query operations for moving objects database systems |
MDM
2007
Springer
14 years 3 months ago
2007
Springer
This work tackles the problem of answer-aggregation for continuous spatio-temporal range queries in distributed settings. We assume a grid-like coverage of the spatial universe of...
VLDB
2000
ACM
14 years 15 days ago
2000
ACM
Modern database applications show a growing demand for efficient and dynamic management of intervals, particularly for temporal and spatial data or for constraint handling. Common...
EDBT
2009
ACM
14 years 3 months ago
2009
ACM
This work addresses the problem of processing continuous nearest neighbor (NN ) queries for moving objects trajectories when the exact position of a given object at a particular t...
VLDB
1995
ACM
14 years 15 days ago
1995
ACM
Efficient processing of aggregation queries is essential for decision support applications. This paper describes a class of query transformations, called eager aggregation and lat...
BMCBI
2010
13 years 9 months ago
2010
Background: Finding the subgraphs of a graph database that are isomorphic to a given query graph has practical applications in several fields, from cheminformatics to image unders...