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RE: SOAP and the Web

RE:  SOAP and the Web
And the problem comes down to the message contents, ie, 
whose schema prevails.  This is not different from the 
import/export techniques in use today, typically, requiring 
and agreed upon format such as comma-delimited ASCII or 
even XML.   The two fights that consume a lot of time 
are who is going to change their schema (transformations 
won't handle what ain't there) and who pays for the 
extra business logic that might be required to 
smooth out the transactions.  Still, as a means of 
bringing edge systems online, web services work 
and are cheaper than this:

"The user has the option of creating the import and export 
definitions or contracting with our company.  OTW, 
bid four weeks for development, the customer 
must provide an authoritative contact for the duration 
of the project, we will provide a utility to add simple 
fields to the database, and will only support fields 
and types available with our schema current on delivery."

Then fight over that after award of contract.  Just 
an aside, this work like data conversion is a loss leader.

It can't be done ad hoc without standard discoverable 
vocabularies.  Even REST can't do that.  That's why the 
major attention can't be SOAP or REST; it has to 
be schema development.  Ontologies are opinions; 
opinions are free until they become transaction controls.

The IBM Web Services security paper is an interesting read 
for proposals on security and intermediaries:




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