On Sat, Feb 18, 2012 at 4:59 PM, Richard Cyganiak <[email protected]> wrote: > On 17 Feb 2012, at 23:14, Kjetil Kjernsmo wrote: >>> In general, the RDFa embedded >>> metadata approach can be replaced by using the <link> element href in XHTML >>> to pointing to an external RDF document, where the rel=”meta” attribute can >>> be used to indicate a relationship between resources. >> >> Yes, but rel="meta" is not standardized as far as I know, see >> http://www.w3.org/TR/html4/types.html#type-links > > rel="meta" is standardized: > http://www.w3.org/TR/rdf-syntax-grammar/#section-rdf-in-HTML > http://www.w3.org/TR/cooluris/#linking > > Best, > Richard
An alternative would be using wdrs:describedby [1], a property defined in the POWDER-S ontology. The only issue is that the corresponding W3C Recommendation [2] specifies on this property a domain restriction which still needs to be amended, as discussed in [3,4]. Anyway, the corresponding "describedby" relationship type can be safely used in HTML LINK elements, since it is registered by IANA (see the corresponding entry at [5]). Said that, the "meta" relationship type (although, as far as I know, is not registered by IANA) is widely used and it is, currently, the recommended one, as stated in the W3C TRs pointed out by Richard. Andrea ---- [1]http://www.w3.org/2007/05/powder-s#describedby [2]http://www.w3.org/TR/powder-dr/#semlink [3]http://lists.w3.org/Archives/Public/public-powderwg/2010Nov/0005.html [4]http://www.w3.org/2007/powder/powder-errata#describedby [5]http://www.iana.org/assignments/link-relations/link-relations.xml -- Andrea Perego, Ph.D. European Commission DG JRC Institute for Environment & Sustainability Unit H06 - Digital Earth & Reference Data Via E. Fermi, 2749 - TP 262 21027 Ispra VA, Italy DE+RD Unit: http://sdi.jrc.ec.europa.eu ---- The views expressed are purely those of the writer and may not in any circumstances be regarded as stating an official position of the European Commission.
