213 search results - page 7 / 43 » Querying Partially Sound and Complete Data Sources |
IDEAS
1999
IEEE
13 years 11 months ago
1999
IEEE
Data integration of several sources has gained considerable attentions with the recent popularity of the Web. In the real world, some information may be missing i.e., partial and ...
SEMWEB
2010
Springer
13 years 5 months ago
2010
Springer
Abstract. Recently, processing of queries on linked data has gained attention. We identify and systematically discuss three main strategies: a bottom-up strategy that discovers new...
AIMSA
2010
Springer
13 years 9 months ago
2010
Springer
Abstract. Ontology based data access (OBDA) is concerned with providing access to typically very large data sources through a mediating conceptual layer that allows one to improve ...
CIKM
2010
Springer
13 years 5 months ago
2010
Springer
Complex search tasks that utilize information from several data sources, are answered by integrating the results of distinct basic search queries. In such integration, each basic ...
ICDE
2006
IEEE
14 years 9 months ago
2006
IEEE
We present MiniCount, the first efficient sound and complete algorithm for finding maximally contained rewritings of conjunctive queries with count, using conjunctive views with c...