[单选] You need to modify the STUDENTS table to add a primary key on the STUDENT_ID column. The table is currently empty. Which statement accomplishes this task?（）

A . ALTER TABLE students ADD PRIMARY KEY _ id;
B . ALTER TABLE students ADD CONSTRAINT PRIMARY KEY (student_id);
C . ALTER TABLE students ADD CONSTRAINT stud_id_pk PRIMARY KEY student_id;
D . ALTER TABLE students ADD CONSTRAINT stud_id_pk PRIMARY KEY (student_id);
E . ALTER TABLE students MODIFY CONSTRAINT stud_id_pk PRIMARY KEY (student_id)

下列不能用来衡量计算机及网络安全的指标是（）保密性。便捷性。完整性。可用性。人格发展中（）的普遍现象。 A customer has two separate storage islands and is planning to implement an SVC to provide forFlashCopy between the two islands. What is the minimum number of inter-switch links （ISLs） thatare required？（） 0。 1。 2。 4。反应 Which command will display the current control key settings？（） ‘tty -l’。 ‘stty -a’。 ‘lstty -a’。 ‘terminfo -l&rsquo。 You need to modify the STUDENTS table to add a primary key on the STUDENT_ID column. The table is currently empty. Which statement accomplishes this task?（）

参考答案：

● 参考解析

本题暂无解析

当前位置：IBM(000-118)题库

[单选] You need to modify the STUDENTS table to add a primary key on the STUDENT_ID column. The table is currently empty. Which statement accomplishes this task?（）

相关题目: