70 search results - page 7 / 14 » Semistructured data schemas with expressive constraints |
PODS
2008
ACM
14 years 7 months ago
2008
ACM
In the study of data exchange one usually assumes an openworld semantics, making it possible to extend instances of target schemas. An alternative closed-world semantics only move...
MTSR
2007
Springer
14 years 1 months ago
2007
Springer
In this paper we describe the development of an ontology of molecular and phenotypic cereals data, realized by integrating existing public web databases with the database developed...
EDBTW
2006
Springer
13 years 9 months ago
2006
Springer
The need for incremental constraint maintenance within collections of semi-structured documents has been ever increasing in the last years due to the widespread diffusion of XML. T...
SEBD
2001
13 years 9 months ago
2001
This paper introduces a new logical formalism, intended for temporal conceptual modelling, as a natural combination of the well-known description logic DLR and point-based linear ...
ER
2008
Springer
13 years 9 months ago
2008
Springer
It is common to find that the definition or common usage of a data modelling language causes there to be restrictions placed on the evolution of data values that are associated wit...