Oracle FAQ Your Portal to the Oracle Knowledge Grid
HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US
 

Home -> Community -> Usenet -> comp.databases.theory -> Weak Entity

Weak Entity

From: Peter Kwok\\ <peterkwok628_at_yahoo.com>
Date: Mon, 14 Oct 2002 00:05:31 +0800
Message-ID: <aoc55a$kdv$1@news.ctimail.com>


In ER diagram, should weak entity be related to strong entity in 1-N relationship?
i.e.
Correct:
Strong Entity----------(1)-Relate-(N)----------Weak Entity

Wrong:
Strong Entity----------(M)-Relate-(N)----------Weak Entity

thanks//peter Received on Sun Oct 13 2002 - 11:05:31 CDT

Original text of this message

HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US