//Database Management

Suppose that we have the following three tuples in a legal instance of a relation schema S with attributes primary_key, A, B and C

attribute names	primary_key	A	B	C
tuple 1	1	4	1	4
tuple 2	2	8	3	7
tuple 3	3	8	2	5

For each of the following dependencies, can you infer whether or not it holds over schema S? Why or why not?

1. A -> C

2. C -> A

Can you identify any functional dependencies that hold over fields A, B and C? If so, please name one.