305 search results - page 51 / 61 » Classification integration and reclassification using constr... |
WWW
2010
ACM
14 years 9 months ago
2010
ACM
We study the problem of anonymizing user profiles so that user privacy is sufficiently protected while the anonymized profiles are still effective in enabling personalized web sea...
MEDINFO
2007
14 years 11 months ago
2007
Managing time-stamped data is essential to clinical research activities and often requires the use of considerable domain knowledge, which is difficult to support within database ...
CCS
2007
ACM
15 years 3 months ago
2007
ACM
In this paper, we study the maintenance of role-based access control (RBAC) models in database environments using transitive closure relations. In particular, the algorithms that ...
SIGMOD
2010
ACM
15 years 2 months ago
2010
ACM
We present SecureBlox, a declarative system that uniļ¬es a distributed query processor with a security policy framework. SecureBlox decouples security concerns from system speciļ...
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PODS
2009
ACM
15 years 10 months ago
2009
ACM
Relational schema mappings have been extensively studied in connection with data integration and exchange problems, but mappings between XML schemas have not received the same amo...