2574 search results - page 52 / 515 » Typed Query Languages for Databases Containing Queries |
FSMNLP
2005
Springer
14 years 2 months ago
2005
Springer
Abstract. The last decade has seen an increase in the number of available corpus query systems. These systems generally implement a query language as well as a database model. We r...
ICDT
2009
ACM
14 years 9 months ago
2009
ACM
The class of unions of conjunctive queries (UCQ) has been shown to be particularly well-behaved for data exchange; its certain answers can be computed in polynomial time (in terms...
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...
ICDE
2009
IEEE
13 years 6 months ago
2009
IEEE
There is much effort to develop comprehensive support for the storage and querying of XML data in database management systems. The major developers have extended their systems to h...
FQAS
2009
Springer
14 years 3 months ago
2009
Springer
Abstract. Controlled languages (CLs) are ambiguity-free subsets of natural languages such as English offering a good trade-off between the formal rigor of ontology and query langua...