2492 search results - page 37 / 499 » Ontology-based Database Access |
ICDE
2003
IEEE
14 years 9 months ago
2003
IEEE
Access Control policies in e-commerce domain can be quite complex, affecting the response time provided to the users. We describe an event-based access control system that can pot...
SIGMOD
2012
ACM
11 years 10 months ago
2012
ACM
The advent of affordable, shared-nothing computing systems portends a new class of parallel database management systems (DBMS) for on-line transaction processing (OLTP) applicatio...
ICDE
2012
IEEE
11 years 10 months ago
2012
IEEE
—Dimensionality reduction is essential in text mining since the dimensionality of text documents could easily reach several tens of thousands. Most recent efforts on dimensionali...
DPD
2010
13 years 5 months ago
2010
In distributed database systems, tables are frequently fragmented and replicated over a number of sites in order to reduce network communication costs. How to fragment, when to rep...
CAISE
2004
Springer
14 years 1 months ago
2004
Springer
Abstract. Information systems are vulnerable to accidental or malicious attacks. Security models for commercial computer systems exist, but information systems security is often ig...