It's not implemented in MySQL. It's there for compatibility.
In other flavors of SQL, constraints can be placed on relationships to
enforce referential integrity.
Cal
http://www.calevans.com
-----Original Message-----
From: Duke [mailto:[EMAIL PROTECTED]]
Sent: Monday, March 19, 2001 3:36 AM
To: [EMAIL PROTECTED]
Subject: What is CONSTRAINTS for?
In the CREATE TABLE command there is a create_defn. option called ...
CONSTRAINT symbol
what is that for?
and how does that work?
duke.
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