Relational Algebra :Division.
From: ben brugman <ben_at_niethier.nl>
Date: Mon, 28 Jun 2004 11:25:03 +0200
Message-ID: <40dfe3cf$0$302$4d4ebb8e_at_read.news.nl.uu.net>
I am searching for a simple example of the Division as in relational algebra.
(Operations : Union, intersection, difference, cartesian product, selection, projections, join and DIVISION).
Date: Mon, 28 Jun 2004 11:25:03 +0200
Message-ID: <40dfe3cf$0$302$4d4ebb8e_at_read.news.nl.uu.net>
I am searching for a simple example of the Division as in relational algebra.
(Operations : Union, intersection, difference, cartesian product, selection, projections, join and DIVISION).
The divisor should have more than one attribute and more than one tuple. The quotient should also be multiple tuples. And how to present (express) this division in SQL.
Thanks for your attention.
ben brugman Received on Mon Jun 28 2004 - 11:25:03 CEST