DTD Summary

You've learned DTD, what's next?

DTD Summary

This tutorial has shown you how to describe the structure of an XML document.

You learned how to use DTD to define legitimate elements of an XML document and how to declare a DTD inside your XML or as an external reference.

You've learned how to declare legitimate elements, properties, entities, and CDATA sections for XML documents.

You also see how to validate an XML document based on a DTD.

You've learned DTD, what's next?

The next step should be to learn about XML Schema.

XML Schema is used to define legitimate elements of an XML document, similar to DTD. We think XML Schema will soon replace DTDs with most web applications.

XML Schema is an XML-based DTD alternative.

Unlike DTDs, XML Schema supports data types and namespaces.

If you would like to learn more about XML Schema, please visit our XML Schema tutorial.

That's all you need to learn from the DTD tutorial!