Re: Columns without names
From: Jan Hidders <hidders_at_gmail.com>
Date: 19 Sep 2006 02:30:38 -0700
Message-ID: <1158658238.713660.215670_at_b28g2000cwb.googlegroups.com>
> Imagine, f'rinstance, I have a data collection in which I have
> propositions of dogs' names & ages and owners' names & ages. Both sets
> of propositions would traditionally be represented as (name:x, age:y),
> but yet are housed in separate relations to form my manipulable
> datatbase. How exactly has this been determined by the set intension?
Date: 19 Sep 2006 02:30:38 -0700
Message-ID: <1158658238.713660.215670_at_b28g2000cwb.googlegroups.com>
JOG wrote:
>
> Imagine, f'rinstance, I have a data collection in which I have
> propositions of dogs' names & ages and owners' names & ages. Both sets
> of propositions would traditionally be represented as (name:x, age:y),
> but yet are housed in separate relations to form my manipulable
> datatbase. How exactly has this been determined by the set intension?
Perhaps I misunderstand your question becuase the answer is trivial: they are modelled as the same relation if and only if the set intension is the same. Of course, formally defining when two set intensions are the same is hard or even impossible.
- Jan Hidders