# 4th normal form:
https://youtu.be/OBiNTE14EEg?si=NalOuiFRgl5NtzmB
*Multivalued depenedency:
what is actually multivalued dependency?
There is a relation which is having three attributes A, B and C
 A,B,C
for a certain value of A we are having set of values for B;
for a certain value of a we are having set of the value for C;
but attribute B and C they are not related
If it is so we can say that multivalued dependency is existing.
Here in example: a certain value of course we're having set of values for the textbooks but instructor
and textbook they are not related then we shall say that multivalued dependency is existing