Maatary;  You can use the SERVICE keyword in SPARQL to access SPARQL endpoints. 

For linking to external controlled vocabularies, the best would be to use Import From URL... in the Imports tab - see Help > Help Contents > TopBraid Composer > User Interface Overview > Imports View.

There is also a SPARQL Endpoint Connector - see TopBraid Composer > Importing Data Sources > Import external information > Import SPARQL Endpoints

In terms of "is there a way to open them in topbraid after downloading them, and linking to it", one way to accomplish this would be to use the SERVICE in a SPARQL Construct.  The following is a working example.

CONSTRUCT {<http://dbpedia.org/resource/Belize> rdfs:label ?o}
WHERE
{  SERVICE <http://dbpedia.org/sparql>
   {  <http://dbpedia.org/resource/Belize> rdfs:label ?o
   }
}

...replace the dbpedia SPARQL Endpoint with whatever endpoint you are linking to.  You can then assert the constructed triples where you want or use INSERT to place them in a specified GRAPH.

-- Scott

On 9/25/2014, 6:59 PM, Maatary Okouya wrote:


I want to link my resource to external resources? What support do i have for that in TopBraid. I saw the linking to DbPedia, but i might be interested in new york Time linked data, freebase, LCSH, VIAF, etc....  
Do i have some support for it? Moreover, I have the specific need to link external controlled vocabulary to real entities with foaf:Focus. Would it be possible?
If i can't look them up online, is there a way to open them in topbraid after downloading them, and linking to it? meaning without making an import in my dataset ?
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