2514 search results - page 185 / 503 » On the Computation of Approximations of Database Queries |
300
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ICDE
2008
IEEE
16 years 8 months ago
2008
IEEE
Abstract-- We investigate the problem of clustering on distributed data streams. In particular, we consider the k-median clustering on stream data arriving at distributed sites whi...
192
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SSD
2005
Springer
16 years 1 days ago
2005
Springer
This paper proposes and solves a-autonomy and k-stops shortest path problems in large spatial databases. Given a source s and a destination d, an aautonomy query retrieves a sequen...
231
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PODS
2011
ACM
14 years 9 months ago
2011
ACM
In deletion propagation, tuples from the database are deleted in order to reflect the deletion of a tuple from the view. Such an operation may result in the (often necessary) del...
211
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CORR
2011
Springer
15 years 1 months ago
2011
Springer
Abstract. We present a categorical denotational semantics for a database mapping, based on views, in the most general framework of a database integration/exchange. Developed databa...
174
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DFG
2007
Springer
16 years 23 days ago
2007
Springer
: The concept of natural neighbors employs the notion of distance to define local neighborhoods in discrete data. Especially when querying and accessing large scale data, it is im...