Hi Mariana,
The subject relation should be inverted in your query for the results
you are looking for:
PREFIX dcterms: <http://purl.org/dc/terms/>
SELECT ?platform
WHERE {
?platform dcterms:subject
<http://dbpedia.org/resource/Category:Cloud_platforms>.
}
The categories are part of a SKOS ConceptScheme and are always used as
/object/ in a triple expressing a subject relation.
hth, cheers
Roland
On 08-01-15 19:53, Mariana Chukanska wrote:
Dear dbpedians,
I'm new with sparql and I'm trying to learn it with DBPedia.
I want to query i.e. all cloud service platforms from the side:
http://dbpedia.org/page/Category:Cloud_platforms
and this is the query I use for that in dbpedia snorql:
PREFIX dcterms: <http://purl.org/dc/terms/>
SELECT ?platform
WHERE {
{ <http://dbpedia.org/resource/Category:Cloud_platforms>
dcterms:subject ?platform.
}
I will appriciate your suggestions and ideas.
Thank you very much for your support in advanced!
My very best
Marianna
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look and join the conversation now. http://goparallel.sourceforge.net
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