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Groups > comp.databases.ms-sqlserver > #1669
| From | Erland Sommarskog <esquel@sommarskog.se> |
|---|---|
| Newsgroups | comp.databases.ms-sqlserver |
| Subject | Re: A question about relationship |
| Date | 2014-02-10 23:39 +0100 |
| Organization | Erland Sommarskog |
| Message-ID | <XnsA2D0F0AEE3E6Yazorman@127.0.0.1> (permalink) |
| References | <ldan3d$f0i$1@dont-email.me> |
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
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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
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