542 search results - page 14 / 109 » An Effective SPARQL Support over Relational Databases |
VLDB
2008
ACM
14 years 8 months ago
2008
ACM
This paper presents a probabilistic relational modelling (implementation) of the major probabilistic retrieval models. Such a high-level implementation is useful since it supports ...
ICDE
2010
IEEE
14 years 3 months ago
2010
IEEE
— Commercial tuple extraction systems have enjoyed some success to extract tuples by regarding HTML pages as tree structures and exploiting XPath queries to find attributes of t...
VLDB
2007
ACM
14 years 8 months ago
2007
ACM
Incompleteness due to missing attribute values (aka "null values") is very common in autonomous web databases, on which user accesses are usually supported through media...
SSDBM
2002
IEEE
14 years 1 months ago
2002
IEEE
This paper presents an approach to answering queries over an ontology modelled using a description logic. The ontology acts as a global schema, providing a declarative description...
CIS
2004
Springer
14 years 2 months ago
2004
Springer
There are a lot of very important data in database, which need to be protected from attacking. Cryptographic support is an important mechanism of securing them. People, however, mu...