964 search results - page 122 / 193 » Efficiently Ordering Query Plans for Data Integration |
135
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DEBU
2008
15 years 4 months ago
2008
In this paper, we describe our experiences in building and evolving an XQuery engine with a focus on data and service federation use cases. The engine that we discuss is a core co...
138
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BMCBI
2007
15 years 4 months ago
2007
Background: Current efforts within the biomedical ontology community focus on achieving interoperability between various biomedical ontologies that cover a range of diverse domain...
243
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SYRCODIS
2008
15 years 5 months ago
2008
In the last few years, XML became a de-facto standard for the exchange of structured and semi-structured data. The database research community took this development into account b...
142
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SIGMOD
1999
ACM
15 years 8 months ago
1999
ACM
The database query optimizer requires the estimation of the query selectivity to find the most efficient access plan. For queries referencing multiple attributes from the same rel...
143
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AIPS
2009
15 years 5 months ago
2009
When modeling real-world decision-theoretic planning problems in the Markov decision process (MDP) framework, it is often impossible to obtain a completely accurate estimate of tr...