CODEWITHSUNDEEP
metadataturtle-rdf
StasM
StasM

Reputation: 11052

RDF document metadata

I have a software that generates an RDF representation of certain dataset. I want to add to the generated data also some metadata describing not specific data contained in the data set but the document itself - i.e., when the document was created, by which software, which version, etc. The schema.org properties provide the necessary relationships, but I can not figure out the proper place to attach it. Is there some standard way of saying "this is the metadata about the document itself" in RDF? I use Turtle serialization for RDF but generic answer working with any serialization would be preferable.

Upvotes: 2

Views: 223

Answers (2)

Luís de Sousa
Luís de Sousa

Reputation: 6842

I am not that familiar with Schema.org, but both DCat and Doublin Core provide means to do so.

In Doublin Core there is the identifier Data property. An example:

PREFIX : <http://my.domain/meta-data#>
PREFIX dcterms: <http://purl.org/dc/terms/>

:1 a dcterms:BibliographicResource ;
    dcterms:identifier <http://my.domain/my-document> .

A similar record but now using DCat and the landingPage data property:

PREFIX : <http://my.domain/meta-data#>
PREFIX dcat: <http://www.w3.org/ns/dcat#>

:1 a dcat:Resource ;
    dcat:landingPage <http://my.domain/my-document> .

Upvotes: 1

Joshua Taylor
Joshua Taylor

Reputation: 85863

There is not a standard place to do this. A RDF graph is just a collection of triples; it's not identified by an IRI or anything like that. (However, in SPARQL datasets, you could post some metadata about a named graph by using the name of the graph as the subject in a triple. That would just be a convention, though. It's not "official" in any sense.)

In the RDF serializations of OWL ontologies, there can be an ontology element (i.e., a resource with the type owl:Ontology), and that can be used to associate some metadata with the ontology. You'd probably want to adopt an approach like that. That is, you'd establish a convention with something like 

@prefix ex: <...>

[] a ex:DatasetRepresentation ;
   ex:created "..." ;
   ex:representationOf <...> .

#... rest of generated content ...

Upvotes: 3

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