 |
 |
RDF is not the be all end all for representing information, so I don't know if there is a point to defining a validation schema which can also be represented in RDF since requirements vary from model to model, project to project. If you were creating RDF/XML, you could enforce complex validation through schematron. XForms 2.0 will support JSON and other non-XML data models, so you could enforce complex validation through XForms bindings since XPath 3 will support parsing JSON, thus JSON-LD. Our project consists of (at the moment) tens of thousands of concepts defined at URIs and represented by XHTML+RDFa fragments. These bits of XHTML are edited in XForms, so the validation is pretty tight. The XHTML+RDFa is transformed into RDF proper upon file save and posted into our endpoint with the SPARQL/Update mechanism. But my broader point is: RDF (typically) is a derivative resource of a more detailed data model. In the case where the RDF is derivative of a canonical resource/document, validation can be applied more consistently during the editing process of the canonical resource. Ethan On Thu, Sep 12, 2013 at 11:19 AM, Karen Coyle <[log in to unmask]> wrote: > I followed the W3C RDF Validation Workshop [1] over the last two days. The > web page has both written papers and slides from each presentation. > > The short summary is that a number of users of RDF have found a need to do > traditional style validation (required, one or more, must be numeric/from a > list, etc.) on their RDF metadata. There is currently no RDF-based standard > for defining validation rules, so each of these is an ad hoc solution which > cannot be easily exchanged. [2] > > The actual technology of validation in all cases is SPARQL. Whether or not > this really scales is one of the questions, but it seems pretty clear that > SPARQL will continue to be the solution for the near future. > > I will try to write up a blog post that will give some more information. > > kc > > > [1] https://www.w3.org/2012/12/**rdf-val/agenda<https://www.w3.org/2012/12/rdf-val/agenda> > [2] nota bene: Although OWL appears to provide validation rules, the OWL > rules only support inferencing. OWL cannot be used to constrain your data > to valid values. > > -- > Karen Coyle > [log in to unmask] http://kcoyle.net > ph: 1-510-540-7596 > m: 1-510-435-8234 > skype: kcoylenet >