Database Design and Relational Theory: Normal Forms and All That Jazz

Part IVFurther Normal Forms

Further Normal Forms

Together, Parts II and III of this book have covered all of the normal forms included in what Chapter 3 called “a first take” on the normal form hierarchy (see Figure 3-3); to be specific, they’ve discussed, in detail, the classical normal forms 1NF, 2NF, 3NF, BCNF, 4NF, and 5NF, with the emphasis on BCNF and 5NF as the most significant ones. But those six normal forms aren’t the end of the story!—there are several more, and they constitute the primary subject matter of this part of the book.

Perhaps I should add that, of the three chapters in this part of the book, Chapter 14 is probably the most important. The other two are included mainly as an attempt on my part at some kind of completeness.