2728 search results - page 535 / 546 » The EGTV Query Language |
ICDT
2010
ACM
14 years 4 months ago
2010
ACM
It is known that the composition of schema mappings, each specified by source-to-target tgds (st-tgds), can be specified by a secondorder tgd (SO tgd). We consider the question of...
SAC
2010
ACM
14 years 2 months ago
2010
ACM
In GIS and spatial databases, cardinal directions are frequently used as selection and join criteria in query languages. However, most cardinal direction models are only able to h...
DEXA
2009
Springer
14 years 2 months ago
2009
Springer
Describing relational data sources (i.e. databases) by means of ontologies constitutes the foundation of most of the semantic based approaches to data access and integration. In sp...
LFCS
2009
Springer
14 years 2 months ago
2009
Springer
Memory logics are a family of modal logics in which standard relational structures are augmented with data structures and additional operations to modify and query these structure...
SEMWEB
2009
Springer
14 years 2 months ago
2009
Springer
The field of biomedicine has embraced the Semantic Web probably more than any other field. As a result, there is a large number of biomedical ontologies covering overlapping area...