Re: Object-relational impedence
Date: Mon, 17 Mar 2008 13:44:01 +0000
Message-ID: <slrnftstd1.s5h.eric_at_tasso.deptj.demon.co.uk>
On 2008-03-16, S Perryman <q_at_q.com> wrote:
...
>
> For the real-world systems involving "variant records" that I have worked
> on (100+ different record types, 100+ different property types) your table
> is merely a global variable from hell (as evidenced by the several telecoms
> systems that used the same approach in the 1990s and ended up being a
> lifetime rewrite and rebuild job whenever types and properties came and
> went) .
>
If you build a system around something like that, you are crazy. If it is a given that you have to deal with, all you can do is treat it as messages and parse them to put the information you need into sensible structures. This is probably true for a much smaller number of variants.
E Received on Mon Mar 17 2008 - 14:44:01 CET