2 search results - page 1 / 1 » Processing transitive nearest-neighbor queries in multi-chan... |
EDBT
2008
ACM
14 years 4 months ago
2008
ACM
Wireless broadcast is an efficient way for information dissemination due to its good scalability [10]. Existing works typically assume mobile devices, such as cell phones and PDAs...
CCS
2007
ACM
13 years 10 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 ...