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<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=202550417-02122003>Dear
David,</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=202550417-02122003></SPAN></FONT> </DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=202550417-02122003>
The AP236 pilot demonstrator based on Part28e2 now in preparation, reflects most
of your issues, special 3, 4 and 5.</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=202550417-02122003></SPAN></FONT> </DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=202550417-02122003>
Regards</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=202550417-02122003></SPAN></FONT> </DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=202550417-02122003> Ricardo</SPAN></FONT></DIV>
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style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">
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<DIV align=left class=OutlookMessageHeader dir=ltr lang=en-us><FONT
face=Tahoma size=2>-----Original Message-----<BR><B>From:</B> David Price
[mailto:david.price@eurostep.com] <BR><B>Sent:</B> terça-feira, 2 de Dezembro
de 2003 16:39<BR><B>To:</B> wg3@tc184-sc4.org;
wg12@tc184-sc4.org<BR><B>Cc:</B> expressIF@tc184-sc4.org;
step-imp@steptools.com<BR><B>Subject:</B> Question to AP owners/implementors
on XML Schema use (Part 28 Edition 2)<BR><BR></FONT></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">Hello WG3 and
WG12,</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt"> </SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">We’ve been working with the AP233
and AP239 teams on Part 28 Edition 2 and XML Schema. Part 28 E2 introduces a
configuration language allowing the production of an XML schema to be tailored
for an EXPRESS schema. The tailoring can happen at the global, entity and/or
attribute level. The issue that has been raised during the discussions with
AP233 and AP239 is if, or how, this capability should be
used.</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt"> </SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">I’m trying to gather “business
requirements” and “technical requirements” in this area. If you have
requirements or usage scenarios in this area, I’d appreciate hearing about
them.</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt"> </SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">So far, what I’ve heard from these
two teams (and relayed to the Part 28 team today) is the
following:</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt"> </SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">1) A single configuration to
produce a “default data exchange XML Schema” for both (or all?) APs is
required. Some have said they want WG3/SC4 to agree and mandate a single
configuration for AP implementation.</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">2) Exactly what the XML document
looks like is not that important as a high level, model based API will be
used.</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">3) The XML schema elements should
be “recognizable” as being derived from the EXPRESS schema, but trying to
reflect the EXPRESS structure in XML is less important than simplicity and
consistency.</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">4) Interoperability, and therefore
the same configuration, is a high priority for AP233, AP239 and PDM
capabilities.</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">5) The first AP233 and AP239
implementations will be based on the ARM, not the AIM. This may continue to be
true for all implementations as well.</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">6) The PLCS consortium is planning
on publishing the AP239 ARM XML Schema through OASIS, so they don’t expect
implementations to be EXPRESS-based.</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt"> </SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">Do other AP teams share these
requirements? I agree they are not all completely consistent (ARM v. AIM), but
requirements seldom are. If your requirements are different, in what
way?</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt"> </SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">Cheers,</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">David</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt"> </SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">Phone +44 20 7704
0499</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">Mobile +44 7788
561308</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">8 Highbury
Place</SPAN></FONT><FONT face=Arial size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">, Flat 5</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">London</SPAN></FONT><FONT
face=Arial size=2><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 10pt"> N5
1QZ</SPAN></FONT></P>
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