新建学生表student，并添加数据
1 -- Create table 2 create table STUDENT 3 ( 4 sno VARCHAR2(3) not null, 5 sname VARCHAR2(8) not null, 6 ssex VARCHAR2(2) not null, 7 sbirthday DATE, 8 class VARCHAR2(5) 9 ) 10 tablespace TEST 11 pctfree 10 12 initrans 1 13 maxtrans 255 14 storage 15 ( 16 initial 64K 17 next 1M 18 minextents 1 19 maxextents unlimited 20 ); 21 -- Add comments to the table 22 comment on table STUDENT 23 is '学生表'; 24 -- Add comments to the columns 25 comment on column STUDENT.sno 26 is '学号（主键）'; 27 comment on column STUDENT.sname 28 is '学生姓名'; 29 comment on column STUDENT.ssex 30 is '学生性别'; 31 comment on column STUDENT.sbirthday 32 is '学生出生年月'; 33 comment on column STUDENT.class 34 is '学生所在班级';
结果：
