Given the basic ER and relational models, which of the following is INCORRECT?

A Relation R with FD set {A->BC, B->A, A->C, A->D, D->A}. How many candidate keys will be there in R?

What is the min and max number of tables required to convert an ER diagram with 2 entities and 1 relationship between them with partial participation constraints of both entities?

Consider the join of a relation R with a relation S. If K has m tuples and S has n tuples, then the maximum and minimum sizes of the join respectively are:

Given two union compatible relations R1(A,B) and R2(C,D). What is the result of the operation R1⋈A=C∧ B=D R2 A. R1 ∪ R2 B. R1 Χ R2 C. R1 - R2 D. R1 ∩ R2