922 search results - page 81 / 185 » Attribute based data sharing with attribute revocation |
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VLDB
2008
ACM
16 years 2 days ago
2008
ACM
Abstract In this article, we present a comprehensive approach for privacy preserving access control based on the notion of purpose. In our model, purpose information associated wit...
EDBT
2006
ACM
15 years 12 months ago
2006
ACM
Incomplete databases, that is, databases that are missing data, are present in many research domains. It is important to derive techniques to access these databases efficiently. We...
GCC
2005
Springer
15 years 5 months ago
2005
Springer
The multidimensional analysis based on data cube has been growing interest. However existing data cube model usually does not have the semantics of attributes and hence the analysi...
ISAMI
2010
14 years 9 months ago
2010
Abstract Medical data sets consist of a huge amount of data organized in instances, where each one contains several attributes. The quality of the models obtained from a database s...
PODS
2002
ACM
15 years 12 months ago
2002
ACM
We study two classes of view update problems in relational databases. We are given a source database S, a monotone query Q, and the view Q(S) generated by the query. The first pro...