427 search results - page 21 / 86 » Conjunctive Query Answering in EL using a Database System |
ICDE
2007
IEEE
14 years 3 months ago
2007
IEEE
Ranking of query/search answers, although introduced by early information retrieval systems, has become mandatory for internet searches. When the answers of a query or search are ...
CIKM
2010
Springer
13 years 6 months ago
2010
Springer
Schema merging is the process of consolidating multiple schemas into a unified view. The task becomes particularly challenging when the schemas are highly heterogeneous and autono...
ADBIS
2004
Springer
14 years 2 months ago
2004
Springer
Abstract. Query reformulation techniques based on semantic knowledge have been used in two ways in database management systems, namely for query optimization and for data integrati...
CORR
2010
Springer
13 years 3 months ago
2010
Springer
Matching dependencies were recently introduced as declarative rules for data cleaning and entity resolution. Enforcing a matching dependency on a database instance identifies the ...
SCCC
1997
IEEE
14 years 28 days ago
1997
IEEE
A cooperative database allows the user to specify approximate or vague query conditions. A vague query requires the database system to rank the retrieved answers according to thei...