Database design made easy, part 9: Sixth Normal Form скачать в хорошем качестве

Database design made easy, part 9: Sixth Normal Form

The highest normal form is Sixth Normal Form. This normal form does not prevent business rule violations that Fifth Normal Form would allow. Instead, it actually allows some violations that Fifth Normal Form prevents. But it still has some popularity, because it ensures that you never have to store NULL values in the tables. I will explain the benefits and the down sides of this normal form, as always with easy to understand examples. For more in-depth database design training, check out my seven and a half hour course on relational database design on Pluralsight: https://www.pluralsight.com/courses/r...