51 search results - page 6 / 11 » Retaining Semantics in Relational Databases by Mapping them ... |
GEOINFORMATICA
1998
13 years 7 months ago
1998
ally related entity types, or classes, into higher level, more abstract types, as part of a hierarchical classi®cation scheme. graphy, generalization retains the notion of abstrac...
SIGMOD
2003
ACM
14 years 7 months ago
2003
ACM
We consider the problem of mapping data in peer-topeer data-sharing systems. Such systems often rely on the use of mapping tables listing pairs of corresponding values to search f...
CIKM
2007
Springer
14 years 1 months ago
2007
Springer
The rapid growth of available data arises the need for more sophisticated techniques for semantic access to information. It has been proved that using conceptual model or ontology...
ICDT
2009
ACM
14 years 8 months ago
2009
ACM
We study containment and equivalence of (unions of) conjunctive queries on relations annotated with elements of a commutative semiring. Such relations and the semantics of positiv...
ESCIENCE
2007
IEEE
13 years 11 months ago
2007
IEEE
Provenance management has become increasingly important to support scientific discovery reproducibility, result interpretation, and problem diagnosis in scientific workflow enviro...