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Closed Loop

Before the Hype, The BCM Connection, The Zachman Framework

Before the Hype

Great article [Mark M. Davydov, "Beyond the Hype: Succeeding With SOA Through Patterns," Oct. 16, 2004], but one small gripe: Before the Gang of Four [Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides] lived a guy by the name of Christopher Alexander, who is generally recognized as being the father of patterns, albeit not explicitly for software architecture.

The OASIS E-Business SOA Technical Committee has developed a newer, specialized reference model for architectural patterns for e-business SOAs.
Please note this is a draft.

Duane Nickull
Vancouver/Berlin

The BCM Connection

Mark Davydov does a great job introducing and explaining this complex yet empowering topic. The approach to problem solving using layers to defer sets of decisions to the latest possible point in the process is one that the OASIS Business-Centric Methodology (BCM) specification exploits. Readers will find much in common between Davydov's article and the BCM approach, and they will also find guidelines and examples for how to utilize these techniques that build on the introduction that he provides.

Having worked in the industry for 25 years, it's rare that I come across something that provides truly new and powerful capabilities that make sense of and extend the current knowledge base of best practices. Kudos to Intelligent Enterprise for introducing your readers to these concepts and techniques.

David RR Webber
Damascus, Maryland

The Zachman Framework

I mean no disrespect, and I'm an avid fan of Joe Celko's SQL books. However, I feel that having been trained in Zachman by the man himself I must comment on a statement in his column ["A Question of Quality," Sept. 4, 2004].

The Zachman Framework, despite what some may believe, is not an array. It's printed on paper looking like an array, but anyone who has gone through the Zachman training will know it's more like a 3d sphere with a relationship between every pair of cells. The key to successfully implementing Zachman is to manage all these relationships that are implicit within an enterprise.

Obviously, there's a lot more to the Zachman Framework, and a lot of people throw the term around without really understanding how it works or having been formally trained. Everyone should take the time and attend the three-day training where you'll learn there is a lot more to the Zachman Framework than meets the eye when you simply look at the 30 cells on paper.

Valter Borges
New Britain, Conn.

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