373 search results - page 5 / 75 » Querying Priced Information in Databases: The Conjunctive Ca... |
119
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PODS
2002
ACM
15 years 9 months ago
2002
ACM
We consider the fundamental operation of applying a conjunction of selection conditions to a set of records. With large main memories available cheaply, systems may choose to keep...
104
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WWW
2011
ACM
14 years 4 months ago
2011
ACM
The problem of answering SPARQL queries over virtual SPARQL views is commonly encountered in a number of settings, including while enforcing security policies to access RDF data, ...
82
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PODS
2006
ACM
15 years 9 months ago
2006
ACM
Privacy-preserving query-answering systems answer queries while provably guaranteeing that sensitive information is kept secret. One very attractive notion of privacy is perfect p...
115
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PODS
2011
ACM
14 years 13 days 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...
178
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VLDB
2003
ACM
15 years 9 months ago
2003
ACM
In data applications such as information integration, there can be limited access patterns to relations, i.e., binding patterns require values to be specified for certain attribut...