| Microsoft XML Core Services (MSXML) 5.0 for Microsoft Office - XML Schemas |  |
XDR Schema Developer's Guide
XML-Data Reduced (XDR) schema is a subset of ideas described in the XML-Data specification, specifically the World Wide Web Consortium (W3C) XML-Data Note and the Document Content Description (DCD) initiative for XML.
MSXML 2.0 and later provide XDR schema support.
The following topics provide more information about XDR schemas.
- Referencing XDR Schemas in XML Documents
- Defining Elements and Attributes
- Content Model
- Using XDR Schema Data Types
- Extensibility
- XDR Schemas and the DOM
- XDR Schemas and Namespaces
- Using Inline XDR Schemas
- Representing the XDR Schema as a DTD
Other Resources 
XML-Data Note | Document Content Description (DCD) for XML