Re: relational databases
From: Alfredo Novoa <alfredo_at_nospam_ncs.es>
Date: Sat, 08 Jun 2002 15:18:30 GMT
Message-ID: <3d021fd3.5558142_at_news.wanadoo.es>
Date: Sat, 08 Jun 2002 15:18:30 GMT
Message-ID: <3d021fd3.5558142_at_news.wanadoo.es>
On Fri, 7 Jun 2002 01:40:07 -0400, "Bob Badour" <bbadour_at_golden.net>
wrote:
>A relational DBMS, or RDBMS, is a DBMS that represents all data in a
>database as values in relations.
>
>A relation is approximately equivalent to the mathematical concept of
>relation. A relation has a header consisting of a set of N named, typed
>attributes and a body consisting of a set of N-dimensional tuples where each
>tuple dimension value corresponds to one of the named, typed attributes.
Good definition.
I only want to add that as far I know there are not any true RDBMS on the market. Received on Sat Jun 08 2002 - 17:18:30 CEST