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Home -> Community -> Usenet -> comp.databases.theory -> Re: check funtion and password show in UML
H. S. Lahman wrote:
> ...
> One also does the same sort of subsystem isolation thing with
> persistence mechanisms. So the way your Registration is represented in
> the application solution may be quite different than in the DB schema
> (though unlikely in this simple case).
An overall logical mismatch like that between the Data storage model (DB schema) and the Object role model is an error in most cases.
In OO software development we want the Data storage model to follow the skeletal logical guidelines of the Object role model. We want the Data storage model to be *subordinate* to the Object role model.
System design with logical leadership and dominance by objects and collaborating networks of objects, as responsible role abstractions, is the core and essence of the OO software development paradigm.
Pragmatic alliance/xp hacking and slavishness to E/R modelling notwithstanding.
Elliott
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http://www.radix.net/~universe ~*~ Enjoy! ~*~ Hail OO Modelling! * Hail the Wireless Web!@Elliott 2002 my comments ~ newsgroups+bitnet OK Received on Tue Jul 30 2002 - 19:02:11 CDT
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