20024 search results - page 275 / 4005 » Database Management Systems |
182
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SDB
1995
15 years 7 months ago
1995
Most of work on partial information in databases asks which operations of standard languages, like relational algebra, can still be performed correctly in the presence of nulls. In...
138
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BMCBI
2006
15 years 3 months ago
2006
Background: Phylogenetic analysis of large, multiple-gene datasets, assembled from public sequence databases, is rapidly becoming a popular way to approach difficult phylogenetic ...
121
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FGCS
2000
15 years 3 months ago
2000
This paper focuses on parallel query optimization. We consider the operator problem and introduce a new class of execution strategies called Linear-Oriented Bushy Trees (LBTs). Co...
128
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AIED
2005
Springer
15 years 9 months ago
2005
Springer
In this paper, we show how using data mining algorithms can help discovering pedagogically relevant knowledge contained in databases obtained from Web-based educational systems. Th...
WWW
2001
ACM
16 years 4 months ago
2001
ACM
