Question 12 A relation schema Ris in 3rd normal form if: each non-primary attribute in R is fully dependent on every key Ball attributes in Rhave atomic domains R satisfies 2nd normal form and no non-primary attribute of R is transitively dependent on the primary key Rcontains only three keys Question 13 The "registers" relationship in: "A staff registers customers at a branch in a team" is a/an relationship. A unary B binary ternary quaternary