Re: Serializability of Transactions and Automatic (Number) Generators
From: Marshall Spight <mspight_at_dnai.com>
Date: Tue, 30 Nov 2004 03:14:18 GMT
Message-ID: <dARqd.417332$wV.204335_at_attbi_s54>
> If you think of the generated values as abstract identifers (and that is
> actually what they are supposed to be) then the semantics of your
> transaction become non-deterministic functions (aka binary relations),
> although in a very limited sense because the only thing that is not
> determined is the exact value of the generated values.
Date: Tue, 30 Nov 2004 03:14:18 GMT
Message-ID: <dARqd.417332$wV.204335_at_attbi_s54>
"Jan Hidders" <jan.hidders_at_REMOVETHIS.pandora.be> wrote in message news:Xxspd.655$nN1.57401_at_phobos.telenet-ops.be...
>
> If you think of the generated values as abstract identifers (and that is
> actually what they are supposed to be) then the semantics of your
> transaction become non-deterministic functions (aka binary relations),
> although in a very limited sense because the only thing that is not
> determined is the exact value of the generated values.
This suggests that there might be some value in a data type for abstract identifiers. It is a little weird that we use integers for keys so often, when there is nothing otherwise integer-like going on.
Marshall Received on Tue Nov 30 2004 - 04:14:18 CET