Re: [soa-rm] comments collected from SOA-RM presentation

A big part of the difference is what makes up the modules. In the distributed object approaches, what is distributed are data objects for which you need to know the structural details in order to wire them together. In SOA, the modules are functional blocks. In order to interact, we are actually saying you need a lot more information than you did for objects (e.g. semantics, policies, ...) but the information itself can be modularly defined -- the semantics come from the vocabulary documented over there, the policy is the privacy one used by that community. The issues related to ownership make it more of a social contract than a technical one -- I am depending on someone else to create and maintain a "product" I need.

On Mar 27, 2006, at 10:16 PM, Michael Stiefel wrote:

The given definition fits almost every form of software.

Michael

At 09:55 PM 3/27/2006, Chiusano Joseph wrote:

<Quote>
Aside from try not to use the overloaded word modular, there should be some mention of needs and capabilities. Otherwise, approaches such as DCOM and CORBA easily fit this definition.
</Quote>

Not sure that that makes a difference - DCOM and CORBA also provide capabilities that fit needs.

Joe

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From: Michael Stiefel [mailto:development@reliablesoftware.com]
Sent: Monday, March 27, 2006 10:01 AM
To: Ken Laskey; SOA-RM
Subject: Re: [soa-rm] comments collected from SOA-RM presentation

According to this definition

3. Possible one line description of SOA: A modular design of solutions where the modules are distributed anywhere, owned by anyone, and reused by everyone (in a manner consistent with specified constraints and policies, including those which limit access).

Aside from try not to use the overloaded word modular, there should be some mention of needs and capabilities. Otherwise, approaches such as DCOM and CORBA easily fit this definition.

Michael

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