2492 search results - page 22 / 499 » Ontology-based Database Access |
DEXA
2004
Springer
14 years 28 days ago
2004
Springer
Much work has been done on characterizing the workload of a database system. Previous studies focused on providing different types of statistical summaries, and modeling the run-ti...
SACMAT
2004
ACM
14 years 29 days ago
2004
ACM
In order to provide a general access control methodology for parts of XML documents, we propose combining rolebased access control as found in the Role Graph Model, with a methodo...
NGC
2000
Springer
13 years 7 months ago
2000
Springer
With the increasing popularity of the WWW, the main challenge in computer science has become content-based retrieval of multimedia objects. Access to multimedia objects in database...
VLDB
2007
ACM
14 years 7 months ago
2007
ACM
Databases are increasingly being used to store information covered by heterogeneous policies, which require support for access control with great flexibility. This has led to incr...
CCS
2006
ACM
13 years 11 months ago
2006
ACM
Today, many applications require users from one organization to access data belonging to organizations. While traditional solutions offered for the federated and mediated database...