On Dec 31, 2003, at 4:56 AM, D. Richard Hipp wrote:


1.  There can only be one PRIMARY KEY, but multiple UNIQUE constraints
    are allowed.



Ah. This one I didn't know. I thought that multiple columns could participate in the PRIMARY KEY. But I just tested it and sure enough I get an error when I try to make more than one column be the PRIMARY KEY.


Thanks.


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