RE: [soa-rm] David Linthicum Says: "ESB versus Fabric.Stop It!"

["Chiusano Joseph" <chiusano_joseph@bah.com>]

Thanks Duane - I think this would be great for the intro section.

Can someone now relate this to our current Figure 2-1? How would an RA
be derived from that? This will help us understand better the RM->RA
roadmap that is required.

Joe

Joseph Chiusano
Booz Allen Hamilton
Visit us online@ http://www.boozallen.com
 

> -----Original Message-----
> From: Duane Nickull [mailto:dnickull@adobe.com] 
> Sent: Tuesday, May 24, 2005 12:57 PM
> Cc: soa-rm@lists.oasis-open.org
> Subject: Re: [soa-rm] David Linthicum Says: "ESB versus 
> Fabric.Stop It!"
> 
> RA means Reference Architecture.  As per the previous emails 
> on this subject, it is a generalized architecture.
> 
> The relationship is that architects use a RM as a guiding 
> model when building a RA.
> 
> For example, if you are architecting a house, an RM may 
> explain the concepts of gravity, a 3D environment, walls, 
> foundations, floors, roofs, ceilings etc.  It is abstract 
> however.  There is nothing specific like a wall with 
> measurements such as 8 feet high.  Note that the RM has only 
> one each of these things - it does not have 4, 16, 23 walls, 
> just one as a concept. 
> 
> The architect may uses this model to create a specific 
> architecture for a specific house (accounting for such things 
> as property, incline, climate etc) or an architect MAY elect 
> to use it to build a more generalized reference architecture. 
>  The latter is often done by architects who design houses.  
> When they sell a house, they must often re-architect the RA 
> for specific implementation details such as incline of land, 
> climate, facing the sun etc..
> 
> So why do we need a RM?  Simple - we now have logical 
> divisions amongst the components of a house and what they 
> mean.  That way, when a company says " we are a flooring 
> company..", that is meaningful since we all know what that 
> means.  The same applies to a roofing company.  Without the 
> basic consensus on the logical divisions, a roofing 
> contractor may also try to include the ceiling and walls as 
> part of his offerings.  
> That would not work and not allow the general contractor to 
> build a house very easily since there may not be consensus 
> upon the division of labor and components to build the house.
> 
> Do you guys think an explanation of this nature may be good 
> to include in the introduction section?
> 
> Duane
> 
> Chiusano Joseph wrote:
> 
> >What is an RA? What is the relationship between an RM and an 
> RA? What 
> >is the RM->RA path for SOA?
> >
> >Matt also submitted last week (I believe) that we may not 
> even need an 
> >RA. How should that change our notion of RM, if at all?
> >
> >Joe
> >
> >Joseph Chiusano
> >Booz Allen Hamilton
> >Visit us online@ http://www.boozallen.com
> > 
> >  
> >
> >>
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>