Re: Objects and Relations

From: Bob Badour <bbadour_at_pei.sympatico.ca>
Date: Mon, 26 Feb 2007 14:54:30 GMT
Message-ID: <GwCEh.1519$PV3.21870@ursa-nb00s0.nbnet.nb.ca>

Alfredo Novoa wrote:

> On 26 feb, 13:24, "Cimode" <cim..._at_hotmail.com> wrote:
>

>>in RM, n-ary attribute instantiation is a synonym for tuple set.

>
> N-ary attribute instantiation does not make any sense.

Google: proposition instantiate

>>Thanks for clarifying that. What about instantiation of
>>multidimensional array objects?

>
> What do you mean with array object?
>
>

>> Could n' we consider them as an
>>instantiation of n-ary attributes (or predicates if you wish)?

>
> Arrays are indeed multidimensional structures like relations. The
> problem is that most structured programming languages lack array
> algebra operators.

Hear! Hear! Received on Mon Feb 26 2007 - 08:54:30 CST