770 search results - page 34 / 154 » An Approach to Querying Multiple Object Databases |
SAC
2004
ACM
15 years 3 months ago
2004
ACM
Integrity constraints are valuable tools for enforcing consistency of data in a database. Global integrity constraints ensure integrity and consistency of data spanning multiple d...
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VLDB
1997
ACM
15 years 1 months ago
1997
ACM
Spatial data mining, i.e., discovery of interesting characteristics and patterns that may implicitly exist in spatial databases, is a challenging task due to the huge amounts of s...
ER
1999
Springer
15 years 2 months ago
1999
Springer
Video data management (VDM) is fast becoming one of seminar topics in multimedia information systems. In VDM systems, there exists an important need for novel techniques and mechan...
PODS
1993
ACM
15 years 1 months ago
1993
ACM
In this paper, we motivate four di erent user de ned window query classes and derive a probabilistic model for each of them. For each model, we characterize the e ciency of spatia...
CIKM
1994
Springer
15 years 1 months ago
1994
Springer
In a spatial database, an object may extend arbitrarily in space. As a result, many spatial data structures e.g., the quadtree, the cell tree, the R+-tree represent an object by p...