RDF Format

As there is no canonical RDF format, we have to make choices on which RDF/XML markup to use. We use the following conventions to display an RDF graph :

1. Use type tag to display the type of a resource. If there are several types, we use rdf:type tags for the additional types.

2. Use property tags to display properties (we do not use attributes to display properties)

3. By default, we recursively embed markup for composite resources. If the display flat statement is used, we do not embed markup and we use reference by means of the rdf:resource attribute.

4. If a resource has an rdfs:label in the target graph, it is displayed even if it is not asked in the query. A style sheet can take advantage of this. This is done because sometimes, resources have system URI that are not human readable.