Knowledge Systems Laboratory, Stanford
University
9
Document Type Definition (DTD)
uDescribes the syntax of a class of XML documents
„Which elements
are present
„Structural
relationships between the elements
uContains or points to markup declarations
„Element type
declarations
„Attribute-list
declarations
„Entity
declarations
„Notation
declarations
uExamples
„<!DOCTYPE greeting SYSTEM
"http://www. ...">
„<!DOCTYPE greeting
[<!ELEMENT greeting
(#PCDATA)> ]>