At 03:12 PM 7/5/00 -0500, Jimmie Houchin wrote:
>"Phillip J. Eby" wrote:
>[snip]
>> Peter Coad's design approach (which ZPatterns is heavily based on/biased
>> towards) emphasizes four major layers of classes in an application:
>> 
>> 1) User Interface (GUI, forms, etc.)
>> 2) Problem Domain (the actual application purpose)
>> 3) Data Management (object persistence/lifecycle management)
>> 4) System Interaction (interfaces w/hardware or other software)
>
>Is this from one of his books? If so, which one? 

"Object Models: Strategies, Patterns, and Applications"


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