6746 search results - page 576 / 1350 » Multimodal Database Query |
203
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XSYM
2004
Springer
16 years 17 days ago
2004
Springer
In this paper, we describe an approach to boosting the performance of an XQuery engine by identifying and exploiting opportunities to share processing both within and across XML qu...
202
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ADC
2003
Springer
16 years 14 days ago
2003
Springer
Selectivity estimation of queries not only provides useful information to the query processing optimization but also may give users a preview of processing results. In this paper,...
188
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SSD
1999
Springer
15 years 11 months ago
1999
Springer
We provide an evaluation of query execution plans (QEP) in the case of queries with one or two spatial joins. The QEPs assume R -tree indexed relations and use a common set of spat...
206
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SSD
1999
Springer
15 years 11 months ago
1999
Springer
Spatiotemporal applications, such as fleet management and air traffic control, involving continuously moving objects are increasingly at the focus of research efforts. The repres...
158
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DEXA
1994
Springer
15 years 11 months ago
1994
Springer
Even if high-level query languages are used, query formulation may cause problems. This is notably so in case of large and complex application domains. Typical examples of these ki...