DTDdriven
DTDdriven denotes an approach in which the structure and constraints of XML data are defined by a Document Type Definition (DTD) and used as the primary reference for data modeling, validation, and processing. In a DTDdriven workflow, the DTD serves as the contract that producers and consumers of XML documents agree to follow.
Originally developed in the SGML ecosystem and carried into XML, DTDs specify element declarations, attribute lists,
In practice, DTDdriven development may involve publishing a DTD to define the allowed document structure, generating
Advantages include simplicity, broad tool support, and a self-contained validation mechanism that does not require additional
Example: a minimal DTD fragment for a library catalog could be:
<!ELEMENT book (title, author, year?)>
]>
This snippet shows how the DTD defines the allowed structure and content of the documents in a