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FIXML
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re: Latest DTD
John Goeller / Salomon Smith Barney 19 Aug 1999 8:05AM ETThere is currently only limited schema support and the general rule of thumb is to stick to what is recommended by the W3C (ie DTDs). The XML Schema work was recently published in May and it looks to have the potential of becoming a recomendation as it is based on the work of the previous schema proposals ( XML-Data,SOX, DCD).
DTDs inherent lack of data typing was always an issue for us. We choose to include data type information as attributes in the FIXML DTDs for reference that could only be validated at the application level.
Regarding the future state of FIXML, I see nothing wrong with experimenting with the DTDs that we have today as we view FIXML as an evolutionary process. In either case, we're still taking about XML and as long as you understand the core concepts the jump to schemas won't be that great.
We decided to only include limited support of FIXML in the next version of FIX because we plan on taking advantage of schemas. I believe the next steps are to take some clues from our collegues at FpML who used a tool to allow for easy migration to any of the various schema proposals. This is the path we will probably take as well by using standard notation to enable the translation to schemas when they are on more solid footing.
> Are we still working with DTDs???
> For system to system messaging is not the
> XML Schema grammar with namespaces
> more powerful, flexible and appropriate?
> See progress accomplished by the
> W3 XML Schema Working Group.
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> Avner Gelb
> agelb@siac.com
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> > Are the DTDs, which are available, of FINAL version?
> > From where I can get the sample FIXML file.
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Latest DTD Paul Brant / Deutsche Bank 17 Mar 1999 11:33PM ET re: Latest DTD John Goeller / Salomon Smith Barney 18 Mar 1999 8:34AM ET re: Latest DTD John Goeller / Salomon Smith Barney 6 Jul 1999 1:43PM ET re: Latest DTD John Goeller / Salomon Smith Barney 19 Aug 1999 8:05AM ET
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