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Groups > comp.databases.ms-sqlserver > #1858 > unrolled thread
| Started by | "Tony Johansson" <johansson.andersson@telia.com> |
|---|---|
| First post | 2015-01-23 17:45 +0100 |
| Last post | 2015-01-23 11:16 -0800 |
| Articles | 2 — 2 participants |
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E-R diagram "Tony Johansson" <johansson.andersson@telia.com> - 2015-01-23 17:45 +0100
Re: E-R diagram Ross Presser <rpresser@gmail.com> - 2015-01-23 11:16 -0800
| From | "Tony Johansson" <johansson.andersson@telia.com> |
|---|---|
| Date | 2015-01-23 17:45 +0100 |
| Subject | E-R diagram |
| Message-ID | <m9ttqm$gkk$1@dont-email.me> |
I'm working on a E-R diagram over horsejumping and would like a comment on one thing I have several entities and one of these is Riders. Is it sensible to add another attribute to the Rider entity to store the result for this rider in the competition. //Tony
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| From | Ross Presser <rpresser@gmail.com> |
|---|---|
| Date | 2015-01-23 11:16 -0800 |
| Message-ID | <dc771ef1-d3c4-4628-9a59-2914dc87f1d7@googlegroups.com> |
| In reply to | #1858 |
On Friday, January 23, 2015 at 11:45:46 AM UTC-5, Tony Johansson wrote: > I'm working on a E-R diagram over horsejumping and would like a comment on > one thing > I have several entities and one of these is Riders. Is it sensible to add > another attribute to the Rider entity to store the result for this rider > in the competition. > > //Tony If your database is storing only one competition, yes. If you are storing multiple competitions, then you need a Competitions entity and a Competitions/Riders join.
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