XML News from Friday, October 6, 2006

The W3C GRDDL Working Group has posted the first public working draft of a GRDDL Primer. According to the draft,

GRDDL is a mechanism for Gleaning Resource Descriptions from Dialects of Languages. It is a technique for obtaining RDF data from XML documents and in particular XHTML pages. Authors may explicitly associate documents with transformation algorithms, typically represented in XSLT, using a link element in the head of the document. Alternatively the information needed to obtain the transformation may be held in an associated metadata profile document or namespace document. Clients reading the document can follow their nose using techniques described in the GRDDL specification to discover the appropriate transformations. This document uses a number of examples from the GRDDL Use Cases document to illustrate in detail the techniques GRDDL provides for associating documents with appropriate instructions for extracting any embedded data.

The W3C GRDDL Working Group has also posted the first public working draft of GRDDL Use Cases: Scenarios of extracting RDF data from XML.

The W3C RDF Data Access Working Group has pushed the SPARQL Query Language for RDF back to working draft status. They are looking for input on two questions in particular: