About us
Services
Products
Work
Contact
Feedback
In Focus
Flash XML slideshow
Database training
3.1.06. Aims (preservation)
Dependency preservation
Constraints on the database
X -> Y in F of R, appears directly in R
i
Attributes X and Y all contained in R
i
Each relation R
i
in 3NF
But what's a dependency?
‹ 3.1.05. Aims
up
3.1.07. Functional dependency ›
s5 slideshow