Answer / narasimha rao bodagala

DTD is the "Document Type Defination" this represents the
syntax of the component and the defined as a specifed
resource. for exaple u will take one server like tomcat the
server specified dependent data is stored in the DTD file.

Answer / anonymous

If it is related to XML-
Document Type Definition, defines the components in a XML
documents.
Attributes
Elements
Occurence of elements
and other things.

Answer / qim2010

The purpose of a DTD is to define the legal building blocks
of an XML document. It defines the document structure with a
list of legal elements. A DTD can be declared inline in your
XML document, or as an external reference.

XML provides an application independent way of sharing data.
With a DTD, independent groups of people can agree to use a
common DTD for interchanging data. Your application can use
a standard DTD to verify that data that you receive from the
outside world is valid. You can also use a DTD to verify
your own data.

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