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Re: looking for old Datamation poster on Normalizing

From: -CELKO- <jcelko212_at_earthlink.net>
Date: 26 Aug 2006 09:03:04 -0700
Message-ID: <1156608184.171579.223640_at_p79g2000cwp.googlegroups.com> 






>>  I've allways been disturbed by the presentation of 4NF in the "puppies & tricks" poster.  It seems to me that there's a misprint, somewhere,  or that the key of one of the  tables has undergone a shift between the 3NF example and the 4NF example. <<





Marc Rettig is the author.  He takes the 3NF example and adds a
"costume" attribute to the "Puppy Tricks" table, but mulitple costumes
can be assigned to each puppy, so you split out a "Puppy Costumes"
table which is all key (puppy_nbr, costume).
Received on Sat Aug 26 2006 - 18:03:04 CEST












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