Document Type Definition

File Extension: .dtd Developer: N/A Views: 34008 Updated: 2011-02-13 11:39:12 Hex: N/A ASCII: N/A

Before XML became the norm Document Type Definition or DTD was used to define the structure of XML documents. DTD defined exactly where resources such as elements and references appeared in a document. Document Type Definition has now been superseded by the XML Schema.