Re: Guessing?
Date: Sun, 25 May 2008 18:06:49 GMT
Message-ID: <ZUh_j.163165$rd2.90807@pd7urf3no>
Bob Badour wrote:
>
> See POOD and the justifications for it. I think it safe to say at least
> some relational proponents might agree with the comment about mysticism
> or at least that Codd's opinion on the matter was not as conclusive as
> he might have thought.
Would you say POOD is an upshot of the Information Principle?
Or is just a design approach Date and McGoveran came up with to work around what they saw as an implementation problem?
A corrolary of the IP might be that any contradictory information allows contradictory results. If so, that wouldn't worry me. I'm distinguishing here between information that we know versus the more abstract information that the dbms has, given a particular design, I'd say only what the dbms knows matters. Received on Sun May 25 2008 - 13:06:49 CDT