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Consider the following relation and associated functional dependencies R ( A , B , C , D ) A B C C D D A

Consider the following relation and associated functional dependencies
R(A,B,C,D)
ABC
CD
DA
Mark all Non-trivial functional dependencies that follow from the set above. (hint, you will have to take the closure of all combinations of A,B,C, and D). Be sure to use the COMBINING rule to combine ANY FDs with identical left hand sides.
{A}+=
{B}+=
{C}+=
{D}+=
{AB}+=
{AC}+=
{AD}+=
{BC}+=
{BD}+=
{CD}+=
{ABC}+=
{ABD}+=
{ACD}+=
{BCD}+=
AC
AD
CAD
AB-CD
BCAD
ACBD
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