> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] > Sent: Monday, December 09, 2002 6:00 PM > To: Jon Frisby > Subject: Re: RE: relational is relational is relational, but ... > > > Your message cannot be posted because it appears to be either spam or > simply off topic to our filter. To bypass the filter you must include > one of the following words in your message: > > sql,query > > If you just reply to this message, and include the entire > text of it in the > reply, your reply will go through. However, you should > first review the text of the message to make sure it has > something to do > with MySQL. Just typing the word MySQL once will be > sufficient, for example. > > You have written the following: > > > While this discipline [defining a primary key] might be useful in > > practice, we do not insist on it ..., because we regard the idea of > > making one candidate key somehow "more equal than the others" as a > > psychological issue merely. Of course, we do not prohibit > it either. > > Point taken. > > With a guaranteed "candidate key" a PK isn't neccesary to serve the > underlying goal (direct addressibility of every datum), but > its still a > useful piece of information to implant in the schema for purposes of > making code-generation tools easier to implement. :) > > -JF > > >
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