34. 若要以binary(二元) relationship取代ternary(三元) relationship,必須運用下列何者?
(A) Subclass
(B) Weak entity type
(C) Superclass
(D) Multiple inheritance
答案:登入後查看
統計: A(18), B(148), C(23), D(34), E(0) #1899130
統計: A(18), B(148), C(23), D(34), E(0) #1899130