2NF

3NF

4 NF

BCNF

First normal form

Second normal form

Third form

Fourth normal form

1 NF

2 NF

3 NF

All of the above

1, 2 and 3 are in 3NF and 4 is in BCNF

1 and 2 are in BCNF and 3 and 4 are in 3NF

All are in 3NF

All are in BCNF

Both S1 and S2 are true

S1 is true

S2 is true

None of these