The include
Statement for Core Reference Ontologies
The GFEAR language supports a short-hand method of including core reference ontologies by the use of the include
statement.
The include
statement lists the ontologies as defined by their industry best practices names:
include rdf, xml;
The include
statement is a form of syntactic sugar that can be written with multiple ontology
statements. For example, the above line could be replaced with:
ontology("http://www.w3.org/1999/02/22-rdf-syntax-ns#", "rdf")
ontology("http://www.w3.org/XML/1998/namespace", "xml")
The short-hand method does not need to be used, and the full ontology
statement can be used for instances where a different prefix may be desired to prevent conflicting prefixes.
The following table details the core reference ontologies that can be expressed using the short-hand notation:
Prefix | Ontology Uri |
---|---|
rdf | http://www.w3.org/1999/02/22-rdf-syntax-ns# |
rdfs | http://www.w3.org/2000/01/rdf-schema# |
owl | http://www.w3.org/2002/07/owl# |
xsd | http://www.w3.org/2001/XMLSchema# |
xml | http://www.w3.org/XML/1998/namespace |