Oracle BPM supports the XML Schema Definition (XSD) language versions 1.0 and 1.1.
Other XML schema languages, such as like DTD (Document Type Definition) are not currently supported. Third party tools exist to convert other schema languages into XSD.
If you need to perform ad-hoc XML parsing and general XML processing without using schemas, refer to the standard Fuego.Xml.XMLDocument and Fuego.Xml.XMLNode components.