Please help understanding normal forms

From: Ryan Gaffuri <rgaffuri_at_cox.net>
Date: 17 Nov 2003 12:12:07 -0800
Message-ID: <1efdad5b.0311171212.4e8ec789_at_posting.google.com>

Please let me know if Im correct and if not what Im missing.

1NF -- all tuples are atomic
2NF -- design allows transitive dependency?

I have 3NF and BCNF in my book and I understand them.

I dont understand the definitions of 4NF and 5NF. I cant find an english definition of them. The proof language is tough to follow. Can someone help me out?

There is a 6th and 7th NF too right? Is that it? Received on Mon Nov 17 2003 - 21:12:07 CET

This message: [ Message body ]
Next message: Uncle Bob (Robert C. Martin): "Re: OOP - a question about database access"
Previous message: Dan: "Re: Database-valued attributes?"
Next in thread: Roy Hann: "Re: Please help understanding normal forms"
Reply: Roy Hann: "Re: Please help understanding normal forms"

Contemporary messages sorted: [ by date ] [ by thread ] [ by subject ] [ by author ]

Original text of this message