617 search results - page 13 / 124 » Semantic queries in databases: problems and challenges |
SAC
2005
ACM
14 years 2 months ago
2005
ACM
Many biological information systems rely on relational database management systems (RDBMS) to manage high-throughput biological data. While keeping these data well archived, organ...
CIKM
2008
Springer
13 years 10 months ago
2008
Springer
Answering queries over ontologies is an important issue for the Semantic Web. Aggregate queries were widely studied for relational databases but almost no results are known for ag...
ADBIS
2009
Springer
14 years 3 months ago
2009
Springer
The development of location-based services and advances in the field of mobile computing have motivated an intensive research effort devoted to the efficient processing of locati...
SSD
2001
Springer
14 years 1 months ago
2001
Springer
In dynamic spatio-temporal environments where objects may continuously move in space, maintaining consistent information about the location of objects and processing motion-speci...
FQAS
2009
Springer
14 years 3 months ago
2009
Springer
We consider the problem of finding and ranking paths in semistructured data without necessarily knowing its full structure. The query language we adopt comprises conjunctions of r...