$3\mathrm{.}5\mathrm{.}1$ a $($pg $105)$

$R(A,B,C,D)$ with $FD\text{'}$s $ABC,CD,$ and $DA.$

i$)$ Indicate all the $3NF$ violations.

ii$)$ Decompose the relations, as necessary, into

collections of relations that

are in $3NF.$

what conditions in we say $3$nf and how we decompose it can you explain it in detail