1. (10 marks) Given the following relation schema T, with attribute A as the primary key, answer the questions below.

(i) What functional dependencies FD can you see exist between the attributes of this relation above?

	A B C D a1 b1 c2 d1 a2 b1 c2 d1 a3 b2 c1 d1 a4 b2 c3 d1

(ii) What update, (iii) delete and (iv) insertion anomalies may or not be present in this T relation above. Explain with specific examples using FDs, keys and the specific attributes affected in this database.

please give this answer as soon as possible.