Re: [soa-rm-ra] what is a generalized SOA RA?

[Danny Thornton <danny_thornton2@yahoo.com>]

A couple of typos if you haven't already caught them
are "beis" and "permitspermitting".  There is a
redundant sentence starting with "In fact, the  
degree of abstraction ..."

The introduction still reads like a justification of
the OASIS SOA RM statement:

The SOA Reference Model defines reference architecture
as “an architectural design pattern that indicates how
an abstract set of mechanisms and relationships
realizes a predetermined set of requirements.”  More
precisely, ...

Afer rereading the introduction my preference is to
leave out the OASIS SOA RM definition for a reference
architecture.  I was thinking of ways to change "More
precisely" to something like "The intended meaning"
but the wording gets awkward.

Danny

--- Francis McCabe <frankmccabe@mac.com> wrote:

> Proposed wording for the section:
> 
> The SOA Reference Model defines reference
> architecture as “an  
> architectural design pattern that indicates how an
> abstract set of  
> mechanisms and relationships realizes a
> predetermined set of  
> requirements.” More precisely, a reference
> architecture can be  
> described as an architectural pattern that provides
> a set of  
> predefined subsystems, specifies their
> responsibilities, and includes  
> rules and guidelines for organizing the
> relationships between them  
> [TOGAF v8.1].
> 
> It is possible to define reference architectures at
> many levels of  
> detail or abstraction, and for many different
> purposes. In fact, the  
> reference architecture for one domain may represent
> a further  
> specialization of another reference architecture,
> with additional  
> requirements over those for which the more general
> reference  
> architecture was defined.
> 
> A reference architecture need not be a concrete
> architecture; i.e.,  
> depending on the requirements being addressed by the
> reference  
> architecture, it may not be necessary to completely
> specify all the  
> technologies, components and their relationships in
> sufficient detail  
> to enable direct implementation.  Such a concrete
> architecture may be  
> valuable and necessary to ensure a successful
> implementation; however,  
> the detail necessary in concrete architectures may
> force technology  
> choices that are not forced by the requirements of
> SOA-based systems  
> per se, but by the technology choices available at
> the time.
> 
> Our approach is to beis as high-level and as
> technology-neutral as  
> possible; while at the same time being fully aware
> of the dominant  
> technologies likely to be employed. In fact, while
> the degree of  
> abstraction in the Reference Architecture is more
> concrete than in the  
> Reference Model; we attempt to capture the essence
> of the  
> architectural components that form SOA-based
> systems.In fact, the  
> degree of abstraction in the Reference Architecture
> is more concrete  
> than in the Reference Model; we attempt to capture
> the essence of the  
> architectural components at an appropriate level of
> abstraction.
> 
> We believe that out our approach will serve two
> purposes: ensuring  
> that the true value of the SOA approach can be
> realized on any  
> appropriate technology, and it permitspermitting our
> audience to focus  
> on the important issues without becoming
> over-burdened with the details.
> 
> -----
> I kept the initial sentence from Ken's proposal
> because I felt that  
> the TOGAF definition missed something; but I thought
> that having it  
> there helped.
> 
> I also elaborated some on the abstract vs concrete
> dimension;  
> attempting to give our work a justification.
> 
> Frank
> 
> 
>
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