問題詳情
32)教师表中有 职工号;姓名;年龄;字段,其中 职工号;为主关键字,建立 教师表 的SQL语句命令是
(A)CREATE TABLE 教师表(职工号 C(10)PRIMARY,姓名 C(20),工龄I)
(B)CREATE TABLE 教师表(职工号 C(10)FOREIGN,姓名 C(20),工龄I)
(C)CREATE TABLE 教师表(职工号 C(10)FOREIGN KEY,姓名 C(20),工龄I)
(D)CREATE TABLE 教师表(职工号 C(10)PRIMARY KEY,姓名 C(20),工龄I)
(A)CREATE TABLE 教师表(职工号 C(10)PRIMARY,姓名 C(20),工龄I)
(B)CREATE TABLE 教师表(职工号 C(10)FOREIGN,姓名 C(20),工龄I)
(C)CREATE TABLE 教师表(职工号 C(10)FOREIGN KEY,姓名 C(20),工龄I)
(D)CREATE TABLE 教师表(职工号 C(10)PRIMARY KEY,姓名 C(20),工龄I)
參考答案
答案:B
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)
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