About us
Services
Products
Work
Contact
Feedback
In Focus
Flash XML slideshow
Database training
3.2.09. Normal forms (2NF)
In context
Not 2NF: AB → C, A → C
AB → C is not in 2NF, because B can be removed
Not 2NF: AB → CDE, B → DE
because attributes D&E are dependent on part of the composite key (B of AB), not all of it
‹ 3.2.08. Normal forms (2NF)
up
3.2.10. Normalisation (2NF) ›
s5 slideshow
