49 search results - page 9 / 10 » A Calculus for Schemas in Z |
DLOG
2003
13 years 9 months ago
2003
Description Logics (DLs), as a field of research, form a formal foundation of first-order semantic Web ontology languages, such as DAML+OIL and OWL. The Semantic Web will build ...
ADBIS
2004
Springer
14 years 1 months ago
2004
Springer
Abstract. Query rewriting method is proposed for the heterogeneous information integration infrastructure formed by the subject mediator environment. Local as View (LAV) approach t...
SSDBM
2002
IEEE
14 years 15 days ago
2002
IEEE
This paper presents an approach to answering queries over an ontology modelled using a description logic. The ontology acts as a global schema, providing a declarative description...
DBPL
1993
Springer
13 years 11 months ago
1993
Springer
A frequent dilemma in the design of a database programming language is the choice between a language with a rich set of tailored notations for schema definitions, query expression...
GI
2004
Springer
14 years 1 months ago
2004
Springer
Abstract: Daten und Informationen heterogener Quellen k¨onnen gleiche Objekte repr¨asentieren und dennoch sich widersprechen oder sich erg¨anzen. Werden solche Daten integriert,...