2492 search results - page 38 / 499 » Ontology-based Database Access |
AIMSA
2010
Springer
13 years 9 months ago
2010
Springer
Abstract. Ontology based data access (OBDA) is concerned with providing access to typically very large data sources through a mediating conceptual layer that allows one to improve ...
IADIS
2004
13 years 9 months ago
2004
As the mobility of people increases, anytime, anywhere computing has become a must. The appearance of powerful portable computers, along with advancement in wireless communication...
DNIS
2005
Springer
14 years 1 months ago
2005
Springer
Access control is the process of mediating every request to data and services maintained by a system and determining whether the request should be granted or denied. Expressiveness...
SIGMOD
1990
ACM
13 years 11 months ago
1990
ACM
In this work access support relataons are introduced as a means for optlmizmg query processing m object-oriented database systems The general idea 1s to mamtam redundant separate ...
DBSEC
2009
13 years 8 months ago
2009
Reflective Database Access Control (RDBAC) is a model in which a database privilege is expressed as a database query itself, rather than as a static privilege in an access control ...