712 search results - page 39 / 143 » Decoupled Query Optimization for Federated Database Systems |
263
Voted
GIS
2006
ACM
16 years 3 months ago
2006
ACM
Remotely sensed data, in particular satellite imagery, play many important roles in environmental applications and models. In particular applications that study (rapid) changes in...
109
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IDEAS
2007
IEEE
15 years 8 months ago
2007
IEEE
In this paper we study the problem of deciding whether a regular path query over views in data-integration systems can be re-expressed without recursion. The problem becomes chall...
105
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SIGMOD
2004
ACM
16 years 2 months ago
2004
ACM
We present BLAS , a Bi-LAbeling based System, for efficiently processing complex XPath queries over XML data. BLAS uses Plabeling to process queries involving consecutive child ax...
116
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EDBTW
2004
Springer
15 years 7 months ago
2004
Springer
—Over the past few years, XML (eXtensible Mark-up Language) has emerged as the standard for information representation and data exchange over the Internet. This paper provides a ...
186
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ARTDB
1997
Springer
15 years 6 months ago
1997
Springer
This paper proposes a strategy for parallel composite event detection in Active database systems (DBS). Up to now, the detection is sequential and totally synchronized, and thus p...