Database Reference
In-Depth Information
You will find that the more you normalize, the more you go from applying rules sequen-
tially to applying them in parallel. For example, instead of first applying 1NF to your model
everywhere and then, when you are done, applying 2NF and so on, you will find yourself
looking to apply all levels at once. This can be done by looking at each entity and making
sure the primary key is correct and that it contains a minimal set of attributes and that all
attributes are facts about only the primary key.
Abstraction (Relational Only)
Normalization is a mandatory technique on the relational logical data model. Abstraction
is an optional technique. Abstraction brings flexibility to your data models by redefining
