[Tagging] football or soccer ?
osm at inbox.org
Mon Aug 2 15:56:18 BST 2010
> On Thu, Jul 1, 2010 at 8:08 AM, John F. Eldredge <john at jfeldredge.com>
>> In fact, the technique of having the user select from a list of words, but
>> actually storing the value as an arbitrary ID (generally numeric), is the
>> recommended technique in database design. It is called "normalizing the
> On 01/07/2010 15:25, Anthony wrote:
> Umm...no. At least, not exactly. If a single column is independent from
> other columns, it is not necessary for normalization to store it as an
> arbitrary ID. (For example, if you have a database table containing a
> driver's license number, date of birth, and hair color, you generally
> wouldn't store the hair color as an arbitrary ID and then have a separate
> table to look up the hair color. It certainly isn't necessary for
> normalization. Assuming driver's license number is your primary key, hair
> color is a fact about the key, the whole key, and nothing but the key.)
On Mon, Aug 2, 2010 at 4:38 AM, Colin Smale <colin.smale at xs4all.nl> wrote:
> Actually that would be exactly what you would do, assuming you want the list
> of colours to be controlled and finite.
No it isn't. If I wanted the list of colors to be controlled and
finite I'd use a check constraint.
> Which DBMS do you call crappy and which do you call good?
Sorry, not going to play that game.
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