Assume that attributes with the same name in different relations
represent the same domain and that the primary key attributes in
each relation are underlined. Answer the following questions given
the relational schema below:
R(A,D)
S(A,B,C,D)
T(C,D,A,H)
List all potential foreign keys in the three relations. (1
mark)
List all superkeys of S. (1 mark)
List all candidate keys of T. (1 mark)
What is the degree and cardinality of S? (1 mark)
If the cardinality of T is N,...