At 17:13 +0000 12/20/02, Jeff Snoxell wrote:
Hi again :)
I found the following mysql stuff in the MySQL manual in a section explaining how to do relationships.
CREATE TABLE persons (
id SMALLINT UNSIGNED NOT NULL AUTO_INCREMENT,
name CHAR(60) NOT NULL,
PRIMARY KEY (id)
);
CREATE TABLE shirts (
id SMALLINT UNSIGNED NOT NULL AUTO_INCREMENT,
style ENUM('t-shirt', 'polo', 'dress') NOT NULL,
color ENUM('red', 'blue', 'orange', 'white', 'black') NOT NULL,
owner SMALLINT UNSIGNED NOT NULL REFERENCES persons,
PRIMARY KEY (id)
);
What's the point of the "REFERENCES persons" bit at the end of the definition of table "Shirts"? It doesn't seem to do anything.
Right, you can leave it out.
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