Titlebook: Database Design and Relational Theory; Normal Forms and All C. J. Date Book 2019Latest edition C. J. Date 2019 Database Design.Functional D

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Implicit Dependenciesthat if we need to tell what normal form some given relvar is in, we do need to know all of the dependencies, implicit ones as well as explicit ones, that hold in that relvar. In this chapter, therefore, I plan to discuss among other things:

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6NFtion, it followed that 5NF was the final normal form. However, I did also say in a footnote to that chapter that there was something called . normal form or 6NF, and that’s what the present chapter is all about.

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The End Is Not Yet the last is easily the most important). But even that’s not the end of the story. In this chapter, just for completeness, I briefly describe or at least mention a few other normal forms that have been defined in the literature at one time or another.

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ality.Provides friendly examples of theory without sacrificiCreate 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. Desi

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Social Organizations and Governmentthese ideas in this part of the book therefore parallels the treatment of BCNF and FDs in Part II. In other words, I plan to treat the material both formally, in Chapter ., and informally in the present chapter.

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Free Will, Benevolence and the Vision Let me just say up front that, just as Chapter . had little to say about 2NF or 3NF, so this chapter has little to say about 4NF, either; like 2NF and 3NF, in fact, 4NF is—from some points of view, at least—primarily of historical interest. However, I’ll discuss it in a little more detail in a later chapter (Chapter .).

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https://doi.org/10.1007/978-94-015-1276-3that if we need to tell what normal form some given relvar is in, we do need to know all of the dependencies, implicit ones as well as explicit ones, that hold in that relvar. In this chapter, therefore, I plan to discuss among other things:

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