Database Design and Relational Theory: Normal Forms and All That Jazz
Authors: C. J. Date
ISBN-10: 1484255399
ISBN-13: 9781484255391
Edition 版本: 2nd ed.
Released: 2019-12-16
Print Length 页数: 451 pages
Book Description
Create database designs that scale,meet business requirements,and inherently work toward keeping your data structured and usable in the face of changing business models and software systems.
This book is about database design theory. Design theory is the scientific foundation for database design,just as the relational model is the scientific foundation for database technology in general. Databases lie at the heart of so much of what we do in the computing world that negative impacts of poor design can be extraordinarily widespread.
This second edition includes greatly expanded coverage of exotic and little understood normal forms such as: essential tuple normal form (ETNF),redundancy free normal form (RFNF),superkey normal form (SKNF),sixth normal form (6NF),and domain key normal form (DKNF). Also included are new appendixes,including one that provides an in-depth look into the crucial notion of data consistency. Sequencing of topics has been improved,and many explanations and examples have been rewritten and clarified based upon the author’s teaching of the content in instructor-led courses.
This book aims to be different from other books on design by bridging the gap between the theory of design and the practice of design. The book explains theory in a way that practitioners should be able to understand,and it explains why that theory is of considerable practical importance. Reading this book provides you with an important theoretical grounding on which to do the practical work of database design. Reading the book also helps you in going to and understanding the more academic texts as you build your base of knowledge and expertise. Anyone with a professional interest in database design can benefit from using this book as a stepping-stone toward a more rigorous design approach and more lasting database models.
What You Will Learn
Understand what design theory is and is not
Be aware of the two different goals of normalization
Know which normal forms are truly significant
Apply design theory in practice
Be familiar with techniques for dealing with redundancy
Understand what consistency is and why it is crucially important
Part 1. Setting the Scene
1. Preliminaries
2. Prerequisites
Part ll. Functional Dependencies,Boyce/Codd Normal Form,and Related Matters
3. Normalization: Some Generalities
4. FDs and BCNF(Informal)
5. FDs and BCNF(Formal)
6. Preserving FDs
7. FD Axiomatization
8. Denormalization
Part ll. Join Dependencies,Fifth Normal Form,and Related Matters
9. JDs and 5NF(Informal)
10. JDs and 5NF(Formal)
11. Implicit Dependencies
12. MVDs and 4NF
Part IⅣ. Further Normal Forms
13. ETNF,RFNF,SKNF
14.6NF
15. The End Is Not Yet
Part V. Orthogonality
16. The Principle of Orthogonal Design
Part Vl. Redundancy
17. We Need More Science
Part Vll. Appendixes
What Is Database Design,Anyway?
More on Consistency
Primary Keys Are Nice but Not Essential
Historical Notes
