• To: Dare Obasanjo <dareo@m...>
• Subject: RE: Web Services/SOA (was RE: XML 2004 weblogitems?)
• From: Rich Salz <rsalz@d...>
• Date: Tue, 30 Nov 2004 06:55:55 -0500 (EST)
• Cc: "xml-dev@l..." <xml-dev@l...>
• In-reply-to: <830178CE7378FC40BC6F1DDADCFDD1D103B777F1@R...>

> So SOA is RPC with a calling convention for methods? Sounds silly to me.

Think of it as data-driven rather then method driven.  There may be one
method, and perhaps a URI or some addressing meta-data, but it's not an
object method, it's not a class invocation, and most of the "what to do"
comes from the single datatype -- a bit of XML -- that is sent back and
forth.

>I like Don's four fundamentals of service orientation
> http://msdn.microsoft.com/msdnmag/issues/04/01/Indigo/default.aspx

Yup, those are good.  Especially #3 which I view as key (but then I'm a
bits-on-the-wire kind of guy)
> * Services share schema and contract, not class

-- 
Rich Salz                  Chief Security Architect
DataPower Technology       http://www.datapower.com
XS40 XML Security Gateway  http://www.datapower.com/products/xs40.html
XML Security Overview      http://www.datapower.com/xmldev/xmlsecurity.html

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