RE: RELAX to ISO
Ok. Sure and you are right. OTOH, that seems to link back to the discussion Martin and Steve and I are having: are business "rules" just nodes in a separate grove? I guess it can be done, but I doubt OOPMen will give up APIs anytime soon. Len Bullard Intergraph Public Safety clbullar@i... http://www.mp3.com/LenBullard Ekam sat.h, Vipraah bahudhaa vadanti. Daamyata. Datta. Dayadhvam.h From: Rick JELLIFFE [mailto:ricko@g...] "Bullard, Claude L (Len)" wrote: > > Business rules as an artificial category. Why artificial? Because it sometimes seems that people say "business rules" when they mean "every constraint that cannot be represented by my schema language". So a business rule is a constraint (or function) that the database designer can leave to the applications programmers while (s)he concentrates on DDL or whatever. So "business rules", used like that, are an artifact of the limits of schema languages which either cannot express dynamic constraints between data or which are only useful for defining data rather than usages of data in various circumstances. But, of course, I am aware that "busines rules" are also used in another way, to mean functions rather than constraints per se.
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