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Hello Forum! Asking yet another one of my typical questions. Do I understand it correctly that the underlying notion of the "normal form" databases is to eliminate repetition from every database, so as a result there's a bigger number of smaller databases? I'm asking this question because in Chapter 3 of the 3rd edition of this book Larry is using a database that contains repeated values in the same column: I also often find myself using databases like that, which seems to work perfectly fine. Am I missing something, as always? Do I understand the idea of the "normal form" database incorrectly, or should there be (if we deal with the example above) a separate databases for all UNIQUE, STANDARD and PO BOX zip code types, and a separate databases for HOTSVILLE, AGUADILLA, ARECIBO and so on? Would appreciate your input!