2492 search results - page 38 / 499 » Ontology-based Database Access |
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AIMSA
2010
Springer
15 years 2 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 ...
108
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IADIS
2004
15 years 1 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...
93
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DNIS
2005
Springer
15 years 6 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
15 years 4 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 ...
113
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DBSEC
2009
15 years 1 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 ...