1588 search results - page 273 / 318 » Consistent query answering in databases |
DEXA
2010
Springer
15 years 7 hour ago
2010
Springer
Abstract. In this paper we present the BPAL platform that includes a logicbased language for business process (BP) modeling and a reasoning mechanism providing support for several ...
CCS
2007
ACM
15 years 6 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 ...
PODS
2010
ACM
15 years 4 months ago
2010
ACM
A fundamental problem in data management is to draw a sample of a large data set, for approximate query answering, selectivity estimation, and query planning. With large, streamin...
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ACL
1989
15 years 29 days ago
1989
Comparative expressions (CEs) such as "bigger than" and "more oranges than" are highly ambiguous, and their meaning is context dependent. Thus, they pose probl...
STOC
2007
ACM
16 years 3 days ago
2007
ACM
This work is at the intersection of two lines of research. One line, initiated by Dinur and Nissim, investigates the price, in accuracy, of protecting privacy in a statistical dat...