67 search results - page 2 / 14 » Describing and Utilizing Constraints to Answer Queries in Da... |
GLOBE
2009
Springer
13 years 9 months ago
2009
Springer
Abstract. We show how to specify and use the metadata for a virtual and relational data integration system under the local-as-view (LAV) approach. We use XML and RuleML for represe...
IJCAI
2003
13 years 6 months ago
2003
We solve the problem of obtaining answers to queries posed to a mediated integration system un der the local-as-view paradigm that are consistent wrt to certain global integrity...
LPNMR
2005
Springer
13 years 10 months ago
2005
Springer
Abstract. The paper presents INFOMIX a successful application of ASP technology to the domain of Data Integration. INFOMIX is a novel system which supports powerful information int...
PODS
2000
ACM
13 years 9 months ago
2000
ACM
The problem of query containment is fundamental to many aspects of database systems, including query optimization, determining independence of queries from updates, and rewriting ...
VLDB
2005
ACM
13 years 10 months ago
2005
ACM
To answer user queries, a data integration system employs a set of semantic mappings between the mediated schema and the schemas of data sources. In dynamic environments sources o...