2514 search results - page 175 / 503 » On the Computation of Approximations of Database Queries |
174
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ICDE
2007
IEEE
16 years 26 days ago
2007
IEEE
In a secure mediated information system, confidentiality is one of the main concerns when transmitting data from datasources to clients via a mediator. We present three approache...
195
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SIGMOD
2004
ACM
16 years 6 months ago
2004
ACM
The prevalent use of XML highlights the need for a generic, flexible access-control mechanism for XML documents that supports efficient and secure query access, without revealing ...
182
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WWW
2010
ACM
15 years 12 months ago
2010
ACM
Typical approaches for querying structured Web Data collect (crawl) and pre-process (index) large amounts of data in a central data repository before allowing for query answering....
178
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CCGRID
2003
IEEE
15 years 12 months ago
2003
IEEE
Clusters are now composed of non-uniform nodes with different CPUs, disks or network cards so that customers can adapt the cluster configuration to the changing technologies and t...
164
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DASFAA
2004
IEEE
15 years 10 months ago
2004
IEEE
Data and computations of a CAD system have been wrapped by a mediator system using CORBA's IIOP Protocol. This allows ad hoc declarative mediator queries to be translated into...