Lagi2 web semantic

Other elements of the semantic web are expressed in formal specifications.
Some of these include Resource Description Framework (RDF), a variety of data interchange formats (e.g. RDF/XML, N3, Turtle, N-Triples), and notations such as RDF Schema (RDFS) and the Web Ontology Language (OWL), all of which are intended to provide a formal description of concepts, terms, and relationships within a given knowledge domain.

Key features of TopBraid Composer include

1. Standards-based, syntax directed development of RDFS and OWL ontologies, SPARQL queries and Rules


2. Re-use of the legacy models and data through XML, UML, spreadsheet and relational database imports


3. Visualization and diagramming


4. Support for re-factoring within and across ontologies


5. Consistency checking, debugging and reasoning with various inference engines


6. Support for scalable database back-ends including AllegroGraph, Jena, Oracle and Sesame


7. Multi-User mode


8. Built-in mash-up facilities such as geographical mapping, calendar and linear charts