Answer the following questions in brief: 1. Consider two relations, Ri and R2, given below. State if it is possible to perform the set union of these two relations, i.e., Ri U R2. If union is possible, please provide the resulting schema after union; if not, state your reasoning Ri -(Firstname char (36), lastname char (36), birthdate date); R2 -(Firstname varchar (36), lastname varchar (36), age int) 2. Consider a relation R(A, B, C, D, E) with dependencies ABC - DE, E->BCD Then the relation R is in 3NF. State true or false with reasoning