删除视图STUDENT的命令是( )。A．DELETE STUDENT VIEWB．DELETE STUDETNC．DROP STUDENT VIEWD．DROP VIEW STUDENT
删除视图STUDENT的命令是( )。
A．DELETE STUDENT VIEW
B．DELETE STUDETN
C．DROP STUDENT VIEW
D．DROP VIEW STUDENT
相关考题：
由于学号(SN)为00291的学生已毕业，欲在关系“Student”中删除该学生的所有信息，用元组关系演算语言实现应为(53)。A．GET W(Student): Student. SN = 00291' DELETE WB．GET W: Student. SN = 00291'in Student DELETE WC．HOLD W(student): Student. SN = 00291' DELETE WD．HOLD W: Student. SN = 00291'in Student DELETE W
删除视图STUDENT的命令是（ ）。A.DELETE STUI)ENT VIEWB.DELETE STUI)ETNC.DROP STUDENT VIEWD.DROP VIEW STUDENT
下列对$student使用正确的是()。 A.$student-$getName（）；B.$student-name；C.$student-$name；D.$student.getName（）；
为choose表添加外键约束，约束名为choose_student_fk，外键为student_no，连接到 student表的stuednt_no字段，以下命令正确的是______。A．alter table choose add constraint choose_student_fk FOREIGN KEY (student_no) ;B．alter table choose add constraint choose_student_fk FOREIGN KEY (student_no) REFERENCES student(stuednt_no);C．alter table choose add constraint choose_student_fk FOREIGN KEY (student_no) REFERENCES student;D．alter table choose add constraint choose_student_fk REFERENCES student(stuednt_no);
选择数据库db_student为当前数据库的命令是（)A．USE db_student;B．OPEN db_student;C．SELECT db_student;D．USE DATABASE db_student;
4、为choose表添加外键约束，约束名为choose_student_fk，外键为student_no，连接到 student表的stuednt_no字段，以下命令正确的是______。A．alter table choose add constraint choose_student_fk FOREIGN KEY (student_no) ;B．alter table choose add constraint choose_student_fk FOREIGN KEY (student_no) REFERENCES student(stuednt_no);C．alter table choose add constraint choose_student_fk FOREIGN KEY (student_no) REFERENCES student;D．alter table choose add constraint choose_student_fk REFERENCES student(stuednt_no);
为choose表添加外键约束，约束名为choose_student_fk，外键为student_no，参照 student表的st_no字段，以下SQL语句片段正确的是（）。A．constraint choose_student_fk FOREIGN KEY (student_no);B．constraint choose_student_fk FOREIGN KEY (student_no) REFERENCES student(st_no);C．constraint choose_student_fk FOREIGN KEY (st_no) REFERENCES student(student_no);D．constraint choose_student_fk REFERENCES student(st_no);
有3×4的结构矩阵student，每个结构有name（姓名）、scores（分数）两个成员，其中scores是以1×5矩阵表示的5门课的成绩，那么要删除第4个学生的第2门课成绩，应采用的正确命令是（）。A．rmfield(student(1,2).scores(2))B．rmfield(student(4).scores)C．student(4).scores(2)=0D．student(1,2).scores(2)=[]