下列那条语句可以创建视图
A、create view v_student as select * from student;
B、alter view v_student as select * from student;
C、drop view v_student as select * from student;
D、sp_help view v_student as select * from student;
A、create view v_student as select * from student;
B、alter view v_student as select * from student;
C、drop view v_student as select * from student;
D、sp_help view v_student as select * from student;
A. select*fromuser_tab_privs;
B. select*fromuser_tables;
C. select*fromuser_role_privs;
D. select*fromuser_sequences;
B.metainitd113c0t0d0s0c0t1d0s0c0t2d0s0-i32k
C.metainitd1-rc0t0d0s0c0t1d0s0c0t2d0s0-i32k
D.metainitd13c0t0d0s0c0t1d0s0c0t2d0s0
A、b
B、b
C、b
D、b
A. TextField b=new TextField("打开");
B. TextArea b=new TextArea("打开");
C. Checkbox b=new Checkbox("打开");
D. Button b=new Button("打开");
A. 通过Project Curve On Surface(投影曲线到曲面)命令,产生曲面曲线
B. 选择曲面,点击激活按钮,在曲面上直接绘制曲线形成曲面曲线
C. 通过Intersect Surfaces(相交曲面)命令,在曲面之间产生曲面曲线
D. 通过Intersect Curve(相交曲线)命令,可以产生曲面曲线
为了保护您的账号安全,请在“简答题”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!