DBI202Xuất hiện trong 1 đề thi
Look at the following statements: (a) We should pick the right kind of elements (b) When an entity has no non-primary key attribute, we should convert that entity to an attribute (c) Use weak entities when-ever possible (d) Always make redundancies
Các lựa chọn
A(a) and (b) are correct
B(a) and (c) are correct
C(a) and (d) are correct
D(b) and (c) are correct