[Tagging] football or soccer ?
osm at inbox.org
Mon Aug 2 16:28:34 BST 2010
On Mon, Aug 2, 2010 at 10:56 AM, Anthony <osm at inbox.org> wrote:
> If I wanted the list of colors to be controlled and
> finite I'd use a check constraint.
By the way, if I were going to use a separate table for the list of
colors, for instance for performance purposes, I'd still use the name
of the color as the key, thus avoiding doing a join every single time
you do a select. The lookup would only be necessary when doing adds,
in order to check the foreign key constraint. The lookup table on
color would have only one column, the color name.
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