A set of markup declarations that define a document type for the SGML-family of markup languages (e.g., XML and HTML). Newer XML Namespace-aware schema languages (e.g., W3C XML and ISO RELAX NG) have largely superseded DTDs.
This guide explains the rules for constructing extensible markup language (XML), introduces document type definitions (DTDs) and XML schemas, discusses strategies for storing and retrieving XML documents, and describes programming with the document object model (DOM) and simple API for XML (SAX).
These, also known as DTD Document Type Definitions, are designed to help organizations integrate applications and exchange documents, and are likely to be an important component of future e-commerce implementations.
PTC's Global Support Organization (GSO) has been strongly involved in the project, helping Gamesa to implement the new solution, which, includes setting up standard based document type definitions (DTD) and reorganizing the technical publications processes.
1 Logical Data Dictionary and Document Type Definitions (DTD) effectively triples the size of the standard by including additional significant business areas such as Servicing for Servicing Transfer transactions and Appraisal for real-estate property information standardization, according to MISMO.
Inmedius Horizon supports industry technical documentation standards, including DITA, ATA iSpec 2200, DocBook, military specifications, and customized Document Type Definitions (DTD) -- all in one complete solution.
Arbortext has supported DITA since 2004 with user interfaces, stylesheets and document type definitions (DTDs) for standard DITA information types (Task, Concept, and Reference), and support for DITA's "specialization" capability, "conref" inclusion mechanism, and custom table models.