325 search results - page 34 / 65 » A Model of Methods Access Authorization in Object-oriented D... |
BMCBI
2010
13 years 7 months ago
2010
Background: The amount of available biological information is rapidly increasing and the focus of biological research has moved from single components to networks and even larger ...
WEBNET
1997
13 years 9 months ago
1997
–The accessibility of the World Wide Web and its flexibility for conveying digital information in various forms makes it a convenient mode of communication for education. In thi...
SIGMOD
2003
ACM
14 years 7 months ago
2003
ACM
One of the critical deficiencies of SQL is lack of support for ndimensional array-based computations which are frequent in OLAP environments. Relational OLAP (ROLAP) applications ...
CCS
2007
ACM
14 years 1 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 ...
SSD
2009
Springer
14 years 2 months ago
2009
Springer
The standard database mechanisms for concurrency control, which include transactions and locking protocols, do not provide the support needed for updating complex geographic data i...