Re: What predicates the following relation represents

pbrazier_at_cosmos-uk.co.uk (Paul) wrote in message news:<51d64140.0404070044.487ccbc6_at_posting.google.com>...
> "Paul Vernon" <paul.vernon_at_ukk.ibmm.comm> wrote in message news:<c4u8li$106q$1_at_gazette.almaden.ibm.com>...

<snip>
> OK I think you understand what I'm saying but I think some others in
> the thread maybe don't. I'm in agreement with Date that saying
> something twice doesn't make it any truer. What I'm also saying is
> that saying something twice doesn't make it wrong.
<snip>

of course it makes it wrong; unless, of course, you're treating each table like a VSAM/COBOL flat file. as soon as you join to this table (and if you're phobic about joins, find another line of work), you get wrong results. unless you write explicit code to deal with duplicates, etc.

unfortunately, the MV/XML/java twinks are pounding the drum these days. Dr. Codd gave us Data Independence with the RM. the twinks are sending us back to the days of COBOL/VSAM, where the only way to comprehend the data is through the application code. that is STUPID.

sorry for the yell, but there is clearly a regression in thought the last few years. do a search on FOLDOC with 'network database'. read the answer. it says it all.

r Received on Thu May 06 2004 - 17:59:54 CEST