A alter table course add constraint pk_cno primary key (cno)
B alter table course add constraint pk_cno primary key on cno
C alter table course add primary key (cno)
D alter table course add primary key on cno
A alter table course add constraint pk_cno primary key (cno)
B alter table course add constraint pk_cno primary key on cno
C alter table course add primary key (cno)
D alter table course add primary key on cno
Copyright © 2020 www.daanwo.com All Rights Reserved |