178 search results - page 22 / 36 » Answering Recursive Queries Using Views |
AICOM
2004
13 years 7 months ago
2004
Abstract. We address the problem of answering queries using expressive symmetric inter-schema constraints which allow to establish mappings between several heterogeneous informatio...
ICFP
2010
ACM
13 years 8 months ago
2010
ACM
Bidirectional transformations provide a novel mechanism for synchronizing and maintaining the consistency of information between input and output. Despite many promising results o...
SIGMOD
2008
ACM
14 years 7 months ago
2008
ACM
Data lineage and data provenance are key to the management of scientific data. Not knowing the exact provenance and processing pipeline used to produce a derived data set often re...
ATAL
2008
Springer
13 years 9 months ago
2008
Springer
In order to obtain semantic interoperability in open MultiAgent Systems, agents need to agree on the basis of different ontologies. In this paper we formally define mapping as cor...
ADBIS
2003
Springer
14 years 18 days ago
2003
Springer
Let a tuple of n objects obeying a query graph (QG) be called the n-tuple. The “Ddistance-value” of this n-tuple is the value of a linear function of distances of the n objects...