Metadata
- RDF - Resource Description Framework
- ONIX for Books - ONline Information eXchange, developed and maintained by EDItEUR jointly with Book Industry Communication (UK) and the Book Industry Study Group (US), and with user groups in Australia, Canada, France, Germany, Italy, the Netherlands, Norway, Spain and the Republic of Korea.
- DDML - reformulations XML DTD
- PRISM - Publishing Requirements for Industry Standard Metadata (PRISM)
Read more about this topic: List Of XML Schemas