218 search results - page 2 / 44 » Query language support for incomplete information in the May... |
AAAI
2010
13 years 6 months ago
2010
Conjunctive query answering is a key reasoning service for many ontology-based applications. In order to improve scalability, many Semantic Web query answering systems give up com...
DEXA
1994
Springer
13 years 9 months ago
1994
Springer
We describe a functional database language OR-SML for handling disjunctive information in database queries, and its implementation on top of Standard ML 12]. The core language has ...
IJWIS
2007
13 years 4 months ago
2007
Streams of data often originate from many distributed sources. A distributed stream processing system publishes such streams of data and enables queries over the streams. This allo...
CIKM
2008
Springer
13 years 6 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...
SDB
1995
13 years 8 months ago
1995
Most of work on partial information in databases asks which operations of standard languages, like relational algebra, can still be performed correctly in the presence of nulls. In...