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Home -> Community -> Usenet -> comp.databases.theory -> Re: Impossible Database Design?
>> There is no smallest or biggest number. Most representations do have them. Very similar, no? <<
But his ënd of time" is part of the *model* and not the implementation.
>> MV resticted to sets. The representation does not immediately show that, though. <<
But Date's [p1: p5] notation requires that there must exist {p1, p2, p3, p4, p5} and that they can be ordered by their names. That does not make any sense. If I discontinue p3 (pink lawn flamingoes) what happens to [p1:p5]? If I replace p3 with p3.1 (yellow lawn flamingoes, which are popular here in Austin, TX because of Lance Armstrong), what to [p1:p5]? If I replace the "p#" with a UPC code, what to [p1:p5]?
A countable set is not like a time continuum. I cannot remove Tuesday from the interval [Monday : Thursday]. I cannot add 'Floobday" to the week. Etc. Received on Fri May 19 2006 - 10:25:11 CDT
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