137 search results - page 25 / 28 » Query optimization for ontology-based information integratio... |
ISCI
2008
13 years 7 months ago
2008
The Semantic Web is the next step of the current Web where information will become more machine-understandable to support effective data discovery and integration. Hierarchical sc...
SACMAT
2005
ACM
14 years 20 days ago
2005
ACM
We investigate a generalization of the notion of XML security view introduced by Stoica and Farkas [17] and later refined by Fan et al. [8]. The model consists of access control ...
JCSS
2000
13 years 6 months ago
2000
We investigate a class of path constraints that is of interest in connection with both semistructured and structured data. In standard database systems, constraints are typically ...
DEBU
2010
13 years 4 months ago
2010
Panda (for Provenance and Data) is a new project whose goal is to develop a general-purpose system that unifies concepts from existing provenance systems and overcomes some limita...
CCS
2005
ACM
14 years 19 days ago
2005
ACM
Policy enforcement is an integral part of many applications. Policies are often used to control access to sensitive information. Current policy specification languages give users ...