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Title: XML - creating an
external DTD - Lesson 10
Duration: 16 minutes
Summary: In this
video, we are continuing our discussion of XML. In previous videos we already
talked about reading and writing XML files. Here, we are concentrating on
defining the structure of an XML file and being able to validate an XML file.
To do that, we are introducing DTD and XSD. We can create a DTD inside and XML
file and externally. I will show you how to create an external DTD and link to
it from within the XML file. The DTD will define the structure of the Books.xml
file by specifying the 'books' root node and 'book' node. Within the book node,
we will have isbn, title, author, and comments. Also, we will see how we can
generate an XSD schema for Books.xml. When you have a choice, it is better to
use an XSD than a DTD because an XSD is strongly typed.
Methodology of the development of example: Good coding standard and simplified design to
illustrate the key points.
Technology Used: XML, DTD, XSD, XSLT
Keywords: XML, DTD
(Document Type Definition), XSD (XML Schema Definition), XSLT (Extensible
Stylesheet Language Transformation).