Mark Birbeck has announced that his chapter on RDF Schema from Wrox's Professional XML Metadata has now been posted online.

RDF Schema is a W3C-developed vocabulary that allows the description of classes and properties used in RDF data. The chapter also includes an overview of DAML+OIL, which forms the starting point for the W3C's new Web Ontology working group.

• An update of the RDF Test Cases working draft has been published. The draft fulfils the obligation of the RDFCore working group to provide machine processable test cases for the technical issues which it addresses.