Rachel Foerster wrote:
>
> Jonathan,
>
> You're right about standard DTD's or Schemas. But you need strong
datatyping
> as well for data attributes, allowable codes, etc. To accomplish this with
> XML requires mechanisms betyond the DTD, such as namespaces, and then
> ultimately perhaps links, etc. to where the standard schemas, etc. are
> avaiable.
I think the XML Schema definition provides for datatyping as well.
Clearly the reason that HIPAA specified X12 was the immaturity of XML. On
the other hand XML is quite usable today. I've have implemented strong
datatyping in projects (for example XMOP:
http://www.openhealth.org/documents/XMOP.htm )
> All of the robustness currently provided by the X12 standard
> syntax just is yet there in a full XML architecture. It will get there,
but
> not today or tomorrow.
Do you mean literally tomorrow? Because its been a slow week, so perhaps
this is true, but once everyone gets back from vacation, I expect that those
last few nits in the XML specs and implementations will get solved and
indeed XML will be *much* more robust than X12 :-)
>
> Additionally, we don't yet have standard for messaging services XML
> documents. This is a key component of the ebXML framework currently being
> developed by the joint effort between UN/CEFACT and OASIS and on in which
> I'm heavily involved.
>
Correct. ebXML is not yet developed to the extent that would be needed
for HIPAA but there is much real world work that can be done in XML today.
As I've mentioned privately in discussing ebXML, the issue about whether to
use native XML or MIME multipart/related message wrappers is (IMHO) a
non-issue because we can still process arbitrary MIME messages using
SAX/XSLT/DOM via the MIME property set (i.e. XMTP).
I'm a true believer and willing to put my money where my mouth is. Like
minded individuals are needed because it is a big project with many facets.
The payoff is that we get to work on a Really Good Thing.
Jonathan Borden
The Open Healthcare Group
http://www.openhealth.org
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