Re: WHAT vs HOW vs WHERE
Date: Mon, 31 May 2004 14:06:09 +0300
Message-ID: <40bb10bc$1_at_post.usenet.com>
"Alfredo Novoa" <alfredo_at_ncs.es> wrote in message
news:40b8bdd4.6757406_at_news-read3.maxwell.syr.edu...
> On Sat, 29 May 2004 08:42:21 -0400, "Laconic2" <laconic2_at_comcast.net>
> wrote:
>
> >In my view, pointers are "good things" not "bad things".
>
> They are good when they are hidden to users.
There are "physical" pointers and "logical" pointers. :-) The "physical" ones are hidden.
> > But there are
> >plenty of "good things" that will harm you if you don't use them right.
>
> For instance if you expose pointers to users.
Well, it is good when users have some pointers :-)
> >In the RDBMS implementations that used tables and indexes to represent
> >relations and navigational aids, there are plenty of pointers.
>
> Hidden to users.
>
> > Indexes
> >are full of pointers.
>
> Indexes are obsolete :-)
>
> >On the subject of WHAT vs HOW, I don't even place pointers on that
> >spectrum.
>
> Pointers are about HOW. How to transverse access paths.
No. Pointers are about WHAT. What are the access paths. :-)
> > Pointers are about WHERE, not about WHAT or HOW. Indexes
> >juxtapose WHAT (the index key) with WHERE (the pointer to the row).
>
> Indexes are about HOW.
>
>
> Regards
> Alfredo
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