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  3. December 2009

Re: Constraints, anyone?

primary key = unique keyed PF


Thanks,
Tommy Holden


From: "James H. H. Lampert" <jamesl@xxxxxxxxxxxxxxxxx>
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Date: 12/14/2009 03:09 PM
Subject: Re: Constraints, anyone?
Sent by: midrange-l-bounces@xxxxxxxxxxxx



Something I don't quite get is the matter of "primary key" constraints.
Assuming that a physical file is uniquely keyed, how do these
constraints relate to the file's own keys?

--
JHHL

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