320 search results - page 46 / 64 » A Theory of Spatio-Temporal Database Queries |
PODS
2008
ACM
14 years 7 months ago
2008
ACM
We present a novel definition of privacy in the framework of offline (retroactive) database query auditing. Given information about the database, a description of sensitive data, ...
PVLDB
2010
13 years 6 months ago
2010
Users who are unfamiliar with database query languages can search XML data sets using keyword queries. Previous work has shown that current XML keyword search methods, although in...
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 ...
ICDE
2010
IEEE
14 years 2 months ago
2010
IEEE
— In this paper we propose PARINET, a new access method to efficiently retrieve the trajectories of objects moving in networks. The structure of PARINET is based on a combination...
PODS
2007
ACM
14 years 7 months ago
2007
ACM
The generalized hypertree width GHW(H) of a hypergraph H is a measure of its cyclicity. Classes of conjunctive queries or constraint satisfaction problems whose associated hypergr...