Given a relation schema R(A, B, C, D, E, G, H), with F={ABC, BC, CDG, DCG, HDEG, EDH} 1- Give a minimal cover of F 2- Determine all keys of R 3- Give a 3NF decomposition of R 4- Is your decomposition BCNF? If not give a BCNF decomposition. T2: Given the following relation schema R(B, N, O, A, T, C) and the set of functional dependencies F = {COT, OAC, CNB, CBA, BN} : 1- Show all keys of R 2- Determine Fc 3- Is the decomposition (C,O,A), (C,N,B), (C,T) lossless? Is it 3NF? Why? 4- Decompose R in a BCNF ? Is it 3NF? Why? T3: Given a relation schema R(A,B,C,D,E, F) with F={ABC, BC, CBD, BDE, ED} 1- Give two different minimal covers of F 2- Determine all keys of R 3- Determine C+ and (CE)+ 4- Why R is not in 2NF? 5- Give a 2NF decomposition of R 6- Give a 3NF decomposition of R 7- Is your decomposition BCNF? If not give a BCNF decomposition.