Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > comp.databases.ms-sqlserver > #1665

A question about relationship

Path csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!eternal-september.org!feeder.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From "Tony Johansson" <johansson.andersson@telia.com>
Newsgroups comp.databases.ms-sqlserver
Subject A question about relationship
Date Mon, 10 Feb 2014 15:18:10 +0100
Organization A noiseless patient Spider
Lines 14
Message-ID <ldan3d$f0i$1@dont-email.me> (permalink)
Mime-Version 1.0
Content-Type text/plain; format=flowed; charset="iso-8859-1"; reply-type=original
Content-Transfer-Encoding 7bit
Injection-Date Mon, 10 Feb 2014 14:18:21 +0000 (UTC)
Injection-Info mx05.eternal-september.org; posting-host="8fdc2b5af81c338deb7045fc6c39b0e2"; logging-data="15378"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19oWi6JeB9++VebXF0etoi6"
X-MimeOLE Produced By Microsoft MimeOLE V6.0.6002.18463
X-Newsreader Microsoft Windows Mail 6.0.6002.18197
Cancel-Lock sha1:BkqaEa0ubTGmZOPrPCqSxtNlDK8=
X-Priority 3
X-MSMail-Priority Normal
Xref csiph.com comp.databases.ms-sqlserver:1665

Show key headers only | View raw


I read a book about  ASP.NET that talk about Entity Framework and here they 
use the Northwind database as an example.

What I find strange is the relationship between Customer and Order.
The book print the relationship between Customer and Order like this
!--------------!                           !-------------------!
!   Customer   ! 0.1 ................ * !           Order       !
!--------------!                           !-------------------!
I found this strange because it means you can have orders without a 
Customer.

//Tony

Back to comp.databases.ms-sqlserver | Previous | NextNext in thread | Find similar


Thread

A question about relationship "Tony Johansson" <johansson.andersson@telia.com> - 2014-02-10 15:18 +0100
  Re: A question about relationship Erland Sommarskog <esquel@sommarskog.se> - 2014-02-10 23:39 +0100
    Re: A question about relationship "Tony Johansson" <johansson.andersson@telia.com> - 2014-02-11 15:39 +0100
      Re: A question about relationship Ross Presser <rpresser@gmail.com> - 2014-02-11 07:11 -0800
        Re: A question about relationship bradbury9 <ray.bradbury9@gmail.com> - 2014-02-11 08:43 -0800
          Re: A question about relationship Ross Presser <rpresser@gmail.com> - 2014-02-11 09:33 -0800
        Re: A question about relationship Lennart Jonsson <erik.lennart.jonsson@gmail.com> - 2014-02-11 18:01 +0100
      Re: A question about relationship Erland Sommarskog <esquel@sommarskog.se> - 2014-02-11 21:54 +0100
        Re: A question about relationship rja.carnegie@gmail.com - 2014-02-11 13:49 -0800
          Re: A question about relationship Erland Sommarskog <esquel@sommarskog.se> - 2014-02-11 23:23 +0100

csiph-web