Suppose that A B and C are attributes of a certain relationa

Suppose that A, B, and C are attributes of a certain relational table. Consider the functional dependency A --> B. Then

A) B --> A

B)  if B --> C then C --> A

C) if B --> C then A --> C

D) if A --> C then B --> C

Solution

Answer :

Suppose that A, B, and C are attributes of a certain relational table.

Consider the functional dependency A --> B and if B --> C then A --> C