what are the fundamental principles behind the design and use of Document Type Definitions (DTDs) in XML

Mar 14, 2001 ... "ASTM Committee E31 on Healthcare Informatics develops standards related to the architecture, content, storage, security, confidentiality, ... Description. This is used to create simple document type definitions. If you need to create a more complicated definition with internal subsets it is ... XML Schema Definition or XSD is a recommendation by the World Wide Web Consortium (W3C) to describe and validate the structure and content of an XML document. DTD is the most common schema language in use with XML documents. A Document Type Definition consist of a set of rules of the following forms:

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what is document type definition in xml

• what are the best practices for creating DTDs that are both human-readable and machine-processable
• what are the limitations of DTDs in expressing constraints that involve machine learning or statistical inference on the data
• how does the browser use the DTD information
• what is ANY content in a DTD
• how can DTDs be used to define the structure of XML-based documents for representing user profiles or preferences
• what is ENTITY attribute type in a DTD
• what are the limitations of DTDs in expressing constraints on the number or types of child elements within a mixed content model
• what are the best practices for organizing and maintaining DTD files, especially for large and complex XML vocabularies
• are there any replacements for DTDs besides XML Schema
• what are the limitations of DTDs in expressing constraints that involve regular expressions or pattern matching on element or attribute values