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DTD and XML Schema

Fisher Daniel
Ranch Hand

Joined: Sep 14, 2001
Posts: 582
Dear all,
DTD and XML Schema are used for validate the structure of xml.
When do we use DTD instead of XML Schema and vice versa?

thanks
daniel
Arun Prasath
Ranch Hand

Joined: Sep 17, 2003
Posts: 192
It depends upon your requirement.
DTD is not an XML document and its limited.
Schema is a XML document and it is extensible.
DTD doesnt support Namespaces but schema does.
DTD doesnt have many datatypes where as schema has 44 built in datatypes. and you can define your own datatypes.
The following Tutorialgives a good idea of Schema and the difference between them.
Hope this helps.


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subject: DTD and XML Schema