Re: Comments on Norbert's topological extension of relational algebra
From: Norbert_Paul <norbertpauls_spambin_at_yahoo.com>
Date: Fri, 11 Dec 2015 09:27:52 +0100
Message-ID: <n4e19j$kk1$1_at_dont-email.me>
Date: Fri, 11 Dec 2015 09:27:52 +0100
Message-ID: <n4e19j$kk1$1_at_dont-email.me>
OOPS!
Norbert_Paul wrote:
> ---------------%<---------------%<---------------
> create table X(id integer not null primary key);
> create table R(
> ida integer not null,
> idb integer not null,
> primary key(ida,idb),
> foreign key(ida) references X,
> foreign key(idb) references X);
>
> --------------->%--------------->%---------------
I forgot to mention that poR is the partial order view on R:
create view poR as
... a query which in general might use "WITH RECURSIVE" ... ;
Received on Fri Dec 11 2015 - 09:27:52 CET