Archives of information concerning schema languages that are no longer commonly used, but interesting for historical purposes.
Sites 4
- DCD - Document Content Description for XML This document proposes a structural schema facility, Document Content Description (DCD), for specifying rules covering the structure and content of XML documents. [W3C Note 31 July 1998]
- DSD - Document Structure Description An XML schema language. A DSD document is a specification of a class of XML documents together with a default mechanism and documentation. FAQs, downloads, tutorials provided.
- XML-Data Describes an XML vocabulary for schemas, that is, for defining and documenting object classes. [W3C Note 05 Jan 1998]
- SOX - Schema for Object-Oriented XML 2.0 A schema language for defining the syntactic structure and partial semantics of XML document types; an alternative to XML DTDs. [W3C Note 30 July 1999]