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XML vs. EDI questions
- From: jwells123 <jwells123@e...>
- To: xml-dev@l...
- Date: Fri, 10 Aug 2001 11:21:45 -0700
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These questions are directed more at EDI people, or
ideally at people who work with both EDI and XML. I'm working on an article
comparing the two, and I'm trying to figure out what XML's real advantages are
over EDI (as opposed to the hyped advantages). Any answers to any of these
questions will be much appreciated.
1. It appears that one of XML's main advantages
over EDI is XSLT, which provides a relatively easy way to translate between
different message formats. In contrast, I've read that EDI trading partners
have to perform lots of application-specific development to introduce
a new EDI message format. Is this true?
a. Doesn't most EDI translation software include a
mapper that precludes the need for modifying your applications to conform to a
new EDI message format?
b. Even if you have an old mainframe and no EDI
translation software is available, won't a VAN perform the
translation?
2. I've also read that connecting a company to a
VAN is very time-consuming and expensive. Is this generally true?
3. Have VAN costs come down significantly in the
past few years?
a. Are there any good VAN cost surveys out there?
I've done a lot of searching on the Web and haven't found anything but anecdotal
information.
4. Another of XML's apparent advantages is schemas
- machine-readable message format definitions that can be used for message
validation. I've read that with EDI, this validation usually takes place at the
application level. However, EDI does appear to have machine-readable message
format definitions with IMPDEF and gXML. Does anyone know how widely these are
used, and how they compare to schemas?
Thank you very much!
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