- 1. Data Type Definition.
- 2. Document Type Definition.
A document that formally specifies the XML elements, their attributes and their syntax for an an XML document. Given a DTD an XML parser should then be able to parse the XML document for which the DTD relates.
DTDs have in part been superseded by xml schemas (XSD).
For more information see:
- http://everything.explained.at/Document_Type_Definition/ - Document Type Definition explained.