consider the relation R(ABCD) with dependencies F:{A-->B,B-->C,C-->D,D-->A}.if decomposed into R1(ABC) and R2(BD),then the relation R1(ABC) is in ___________Normal form.
a)1NF b)2NF
c)3NF d)BCNF
here , the ans is option(d) but i have doubt that if above relation is decomposed into R1(ABC) then the dependencies A-->B,
B--->C comes under R1.and in that Dependency B--->C not satisfied for NF3 bcz non-key--->non-key so,how this relation i.e R1 in BCNF ,plz explain me.