The Semantic Web anticipates integrated access to a large number of information sources
on the Internet represented as Resource Description Framework (RDF). Given the large …

Ontology is an effective conceptualism commonly used for the semantic Web. Fuzzy logic
can be incorporated to ontology to represent uncertainty information. Typically, fuzzy …

With rising importance of knowledge interchange, many industrial and academic
applications have adopted ontologies as their conceptual backbone. However, industrial …

Abstract Ontology Based Data Access (OBDA) is a prominent approach to query databases
which uses an ontology to expose data in a conceptually clear manner by abstracting away …

Relational databases are considered one of the most popular storage solutions for various
kinds of data and they have been recognized as a key factor in generating huge amounts of …

This article presents the semantic portal MuseumFinland for publishing heterogeneous
museum collections on the Semantic Web. It is shown how museums with their semantically …

Abstract The Semantic Web will bring structure to the content of Web pages, being an
extension of the current Web, in which information is given a well-defined meaning …

Two main data models are currently used for representing knowledge and information in
computer systems. Database models, especially relational databases, have been the leader …

We present R2O, an extensible and declarative language to describe mappings between
relational DB schemas and ontologies implemented in RDF (S) or OWL. R2O provides an …

Ontologies have recently became a popular mechanism to expose relational database
(RDBs) due to their ability to describe the domain of data in terms of classes and properties …