Re: Mixed, or conditional, datatypes
Date: Mon, 26 Mar 2007 16:19:15 -0700
Message-ID: <52lg03lnphqi59pg125hta5b9pbqllbl0h_at_4ax.com>
Chris Edwards <cme_at_ihug.co.nz> wrote:
[snip]
>I suppose another approach would be to store the response as a single
>attribute of a domain that supports the values "lifelong resident" (and
>perhaps "never lived in the US") in addition to numbers for indicating
>the length of time since moving there. Of course, realistically, you'd
>probably just record the date the respondent started living in the US
>(which could be their date of birth, for a lifelong resident).
Maybe not realistically. I lived in the U.S.A. for about twenty months. I moved back to Canada. If I go Down There again (and I might), what should the row(s) corresponding to me state?
[snip]
>BTW, is it a coincidence that the "variant record" construct in C is
>called "union"?
I do not think so, as it defines a union of possible values.
Sincerely,
Gene Wirchenko
Computerese Irregular Verb Conjugation:
I have preferences. You have biases. He/She has prejudices.Received on Tue Mar 27 2007 - 01:19:15 CEST