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XML Basic
XML
Introduction
XML
Basic Tags
XML Validation
XML with CSS
XML CDATA
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XML validation
XML must be well formed
An xml that contains a DOCTYPE declaration and that compiles with the constraints for that class of XML
.Document expressed in the document type declaration is said to be valid. In other word a valid XML document must comply with a defined logical
structure.All XML documents must be well formed.a validating XML processor can be use the DTD to
confirm that document confirms to the relevent DTD.
what is DTD
A DTD is a description of the allowed structure of class XML documents.in DTD you declare elements,attributes which is allowed in class of XML documents.
XML validated against a DTD is Valid XML.
A "Well Formed" XML document is a document that conforms to the XML syntax rules that were described in the previous chapters:
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<?xml version="1.0"?>
<school>
<student1>rama</student1>
<address>4131 e 200 w</address>
<phone>801-222-222</phone>
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XML document also conforms to a DTD.
A "Valid" XML document is a "Well Formed" XML document, which also confrms to the rules of a Document Type Definition (DTD):
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<?xml version="1.0"?>
<!DOCTYPE student information "school.dtd">
<school>
<student1>rama</student1>
<address>4131 e 200 w</address>
<phone>801-222-222</phone>
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