37.兩個資料表(table)要產生關聯(relation)，必須要有key，下列描述何者為非： (A)被參考資料表所引用的稱為外部參考鍵(Foreign Key) (B)主鍵(Primary Key) 的值不可為NULL (C)主鍵的值可重覆 (D)外部參考鍵的值可為NULL

8. What does it mean when the sensitivity of a test is said to be high? (A) It means that, in the case of a patient not having the disease, the chance of getting a positive test result is (relatively) high. (B) It means that, in the case of a patient having the disease, the chance of getting a positive test result is (relatively) high. (C) It means that, in the case of a patient not having the disease, the chance of getting a negative test result is (relatively) high. (D) It means that, in the case of a patient having the disease, the chance of getting a negative test result is (relatively) high.

37.兩個資料表(table)要產生關聯(relation)，必須要有key，下列描述何者為非：
(A)被參考資料表所引用的稱為外部參考鍵(Foreign Key)
(B)主鍵(Primary Key) 的值不可為NULL
(C)主鍵的值可重覆
(D)外部參考鍵的值可為NULL

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