XML Tutorials - Herong's Tutorial Examples - Version 5.10, by Dr. Herong Yang
DTD (Document Type Definition) Introduction
This chapter provides tutorial notes and example codes on DTD (Document Type Definition). Topics include introduction to DTD (Document Type Definition); using DOCTYPE statement to define an XML document type; specifying XML elements, attributes and entities declaration statements inside or outside XML files; validating XML files against DTD document types.
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