Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > comp.databases.ms-sqlserver > #1671
| 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 | Re: A question about relationship |
| Date | Tue, 11 Feb 2014 15:39:17 +0100 |
| Organization | A noiseless patient Spider |
| Lines | 23 |
| Message-ID | <lddcn4$i2b$1@dont-email.me> (permalink) |
| References | <ldan3d$f0i$1@dont-email.me> <XnsA2D0F0AEE3E6Yazorman@127.0.0.1> |
| Mime-Version | 1.0 |
| Content-Type | text/plain; format=flowed; charset="Windows-1252"; reply-type=original |
| Content-Transfer-Encoding | 7bit |
| Injection-Date | Tue, 11 Feb 2014 14:39:32 +0000 (UTC) |
| Injection-Info | mx05.eternal-september.org; posting-host="8fdc2b5af81c338deb7045fc6c39b0e2"; logging-data="18507"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/L3CrilhfK0bD+UlXeKLR6" |
| X-MimeOLE | Produced By Microsoft MimeOLE V6.0.6002.18463 |
| In-Reply-To | <XnsA2D0F0AEE3E6Yazorman@127.0.0.1> |
| X-Newsreader | Microsoft Windows Mail 6.0.6002.18197 |
| Cancel-Lock | sha1:YFxYEZIw17wQmEjR200k/LX2dTQ= |
| X-Priority | 3 |
| X-MSMail-Priority | Normal |
| Xref | csiph.com comp.databases.ms-sqlserver:1671 |
Show key headers only | View raw
Yes a customer without order sounds ok But order without customer is incorrect. //Tony "Erland Sommarskog" <esquel@sommarskog.se> skrev i meddelandet news:XnsA2D0F0AEE3E6Yazorman@127.0.0.1... > Tony Johansson (johansson.andersson@telia.com) writes: >> 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. > > Not sure how to interpret that, but there can certainly be customers > without orders. I believe that Northwind has three of them. > > > -- > Erland Sommarskog, Stockholm, esquel@sommarskog.se
Back to comp.databases.ms-sqlserver | Previous | Next — Previous in thread | Next in thread | Find similar
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