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XML verifying

 
Greenhorn
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Hi All,

I have a problem described as following:
Let a XML document called D1, now, if a have another XML document called D2, I need a mechanism for verifying that D2 is derived from D1, in other words how we can verify (tool, mechanism, algorithm, etc) that D2 respect the DTD (Document Type Definition) of D1.

Thanks in advance.
 
Ranch Hand
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you can use XML parsers to validate your xml instance document against either DTD or Schema.

xerces is best example of such parser. Try running sax.Counter which will validate your xml document.

you might have to download xerces jar package from www.apache.com.

java sax.Counter example.xml
 
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Just validate D2 against the DTD of D1.
 
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