2674 search results - page 291 / 535 » Data Models and Query Languages for Spatial Databases |
193
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EDBT
2008
ACM
16 years 6 months ago
2008
ACM
There has been much recent interest in on-line data mining. Existing mining algorithms designed for stored data are either not applicable or not effective on data streams, where r...
296
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GIS
2007
ACM
16 years 7 months ago
2007
ACM
Continuous spatial queries posted within an environment of moving objects produce as their results a time-varying set of objects. In the most ambitious case both queries and data ...
133
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ISI
2003
Springer
15 years 11 months ago
2003
Springer
In many intelligence and security tasks it is necessary to monitor data in database in order to detect certain events or changes. Currently, database systems offer triggers to pro...
159
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VLDB
2005
ACM
16 years 3 days ago
2005
ACM
We study XML stream-specific schema-based optimization. We assume a widely-adopted automata-based execution model for XQuery evaluation. Criteria are established regarding what s...
268
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ICDE
2005
IEEE
16 years 8 months ago
2005
IEEE
We demonstrate a web service and client application for querying and visualizing datasets defined over arbitrary topological grids. Such gridded datasets are produced by Earth sci...