1860 search results - page 88 / 372 » A Model of Queries for Object-Oriented Databases |
284
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ICDE
1998
IEEE
16 years 7 months ago
1998
IEEE
The association of timestamps with various data items such as tuples or attribute values is fundamental to the management of time-varying information. Using intervals in timestamp...
255
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GIS
2008
ACM
16 years 7 months ago
2008
ACM
Multi-dimensional spatial data are obtained when a number of data acquisition devices are deployed at different locations to measure a certain set of attributes of the study subje...
139
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ADC
1999
Springer
15 years 10 months ago
1999
Springer
We introduce a cost model for the M-tree access method [Ciaccia et al., 1997] which provides estimates of CPU (distance computations) and I/O costs for the execution of similarity ...
171
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ICDE
2005
IEEE
15 years 12 months ago
2005
IEEE
Sensor networks are an emerging technology that provide new means to monitor and understand various phenomena. Nodes in a sensor network typically have a limited power supply, thu...
144
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PODS
1993
ACM
15 years 10 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...