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Hiya,
But xmlspy is a trial version and is valid only for 30 days or
so...
Is there any long term tool for this?
Thanks in Advance
Murali
> ----------
> From: Duane Nickull[SMTP:duane@x...]
> Sent: Thursday, May 17, 2001 3:15 PM
> To: Rob Lawson; xml-dev@l...
> Subject: Re: Generating a DTD from XML files?
>
> > Does anyone know a utility or package to generate a basic DTD from XML
> > files?
> >>>
>
> XML Spy and many other packages will do this for you, however, you will
> have to edit the DTD by hand afterwards to fix cardinality rules. There
> is
> no way that an automated process could establish whether or not you wanted
> to allow multiple instances of a certain element when only one instance is
> present in your document. Also, enumerations for attribute values are
> impossible for an automated process to properly declare. If your source
> XML
> document has a structure like this:
>
> <price currency="USD"/>
>
> All it could determine is the present value and write out a DTD
> declaration
> like such:
>
> <!ELEMENT price (#PCDATA)>
> <!ATTLIST price currency CDATA #REQUIRED>
>
> It cannot write out whether the value for "currency" is #REQUIRED or
> #IMPLIED or #FIXED. It also could not tell you that additional values are
> allowed, what the dafault should be and that only those values are allowed
> like this:
>
> <!ATTLIST price currency (USD | CAD | AUS) "USD" #REQUIRED>
>
> Best advice: text editor + old school methods
>
> ;-)
>
> Cheers
>
> Duane Nickull
> CTO, XML Global Technologies
> http://www.xmlglobal.com
>
>
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