Let a prime attribute be one that appears in at least one candidate key. Let α and β be sets of attributes such that α → β holds, but β → α does not hold. Let A be an attribute that is not in α, is...

Let a prime attribute be one that appears in at least one candidate key. Let α and
β be sets of attributes such that α → β holds, but β → α does not hold. Let A be an attribute that is not in α, is not in β, and for which β → A holds. We say that A is transitively dependent on α. We can restate the definition of 3NF as follows:
A relation schema R is in 3NF with respect to a set F of functional dependenciesif there are no nonprime attributes A in R for which A is transitively dependent on a key for R. Show that this new definition is equivalent to the original one

Jun 09, 2022

SOLUTION.PDF

Let a prime attribute be one that appears in at least one candidate key. Let α and β be sets of attributes such that α → β holds, but β → α does not hold. Let A be an attribute that is not in α, is...

Get Answer To This Question

Related Questions & Answers

Submit New Assignment