問題詳情

100. Which of the following statement is incorrect
(A) SQL can express all the relations between entities
(B) the basic element ofrelational database is relation
(C) after normalization, human can exam the dataeasily
(D) all of the above

參考答案

答案：C
難度：適中0.5
統計：A(1),B(0),C(1),D(0),E(0)