4 Understanding Normalization There are two rules in (Top web site)
4 Understanding Normalization There are two rules in life: Rule #1: Don t sweat the small stuff. Rule #2: Everything is small stuff. (Finn Taylor) Life is as complicated as we make it normalization can be simplified. This chapter examines the detail of the normalization process. Normalization is the sequence of steps by which a relational database model is both created and improved upon. The sequence of steps involved in the normalization process is called Normal Forms. Essentially, Normal Forms applied during a process of normalization allow creation of a relational database model as a step-by-step progression. Previous chapters have examined history and applications, plus various other factors involved in database model design. Chapter 3 introduced all the parts and pieces involved in a relational database model. This chapter now uses the terminology covered in Chapter 3 and explains how to build a relational database model. Subsequent chapters examine more advanced details of relational database modeling such as denormalization and SQL, both of which depend on a good understanding of normalization. This chapter describes the precise steps involved in creation of relational database models. These steps are the 1st, 2nd, and 3rd Normal Forms, plus the rarely commercially implemented Boyce-Codd, 4th, 5th, and Domain Key Normal Forms. The Normal Forms steps are the progressive steps in the normalization process. In this chapter, you learn about the following: . Anomalies . Dependency and determinants . Normalization . A layman s method of understanding normalization
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