From: | Jim Nasby <Jim(dot)Nasby(at)BlueTreble(dot)com> |
---|---|
To: | David Blomstrom <david(dot)blomstrom(at)gmail(dot)com>, Alban Hertroys <haramrae(at)gmail(dot)com> |
Cc: | Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com>, <pgsql-general(at)postgresql(dot)org> |
Subject: | Re: Recursive Arrays 101 |
Date: | 2015-10-26 14:43:42 |
Message-ID: | 562E3C1E.4020609@BlueTreble.com |
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Thread: | |
Lists: | pgsql-general |
On 10/25/15 8:10 PM, David Blomstrom wrote:
> @ Adrian Klaver: Oh, so you're suggesting I make separate tables for
> kingdoms, classes and on down to species. I'll research foreign keys and
> see what I can come up with. I hope I can make separate tables for
> mammal species, bird species, fish species, etc. There are just so many
> species - especially fish - the spreadsheets I use to organize them are
> just about maxed out as it is.
The suggestion is simply to have 7 tables:
CREATE TABLE kingdom(
kingdom_id serial PRIMARY KEY
, kingdom_name text NOT NULL
, ...
);
CREATE TABLE phylum(
phylum_id serial PRIMARY KEY
, kingdom_id int NOT NULL REFERENCES kingdom
, ...
);
CREATE TABLE class(
...
);
and so-on.
--
Jim Nasby, Data Architect, Blue Treble Consulting, Austin TX
Experts in Analytics, Data Architecture and PostgreSQL
Data in Trouble? Get it in Treble! http://BlueTreble.com
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