325 search results - page 34 / 65 » HyperGraphDB: A Generalized Graph Database |
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 ...
ERCIMDL
2007
Springer
14 years 1 months ago
2007
Springer
We introduce a model of uncertainty where documents are not uniquely identified in a reference network, and some links may be incorrect. It generalizes the probabilistic approach ...
ACTAC
1998
13 years 7 months ago
1998
In a semi-structured database there is no clear separation between the data and the schema, and the degree to which it is structured depends on the application. Semi-structured da...
GIS
2010
ACM
13 years 5 months ago
2010
ACM
Recording the location of people using location-acquisition technologies, such as GPS, allows generating life patterns, which associate people to places they frequently visit. Con...
CIKM
2005
Springer
14 years 1 months ago
2005
Springer
Testing reachability between nodes in a graph is a well-known problem with many important applications, including knowledge representation, program analysis, and more recently, bi...