text: drop table tbl_star;
  drop table tbl_star_area;
  
  drop sequence tbl_star_id;
  create sequence tbl_star_id;
  
  drop sequence tbl_star_area_id;
  create sequence tbl_star_area_id;
  
  create table tbl_star_area(
  	id number(7) primary key,
  	area_name varchar2(20) not null
  );
  
  create table tbl_star(
  	id number(7) primary key,
  	name varchar2(20) not null,
  	gender char(1) check(gender in('F','M')),
  	birthday date default sysdate,
  	head_img varchar(20) not null,
  	details varchar2(20),
  	area_id number(7),
  	constraint area_id_fk foreign key(area_id) referense tbl_star_area(id)
  );
  
  insert into tbl_star values(1,'大陆');
  insert into tbl_star values(2,'台湾');
  insert into tbl_star values(3,'香港');
  insert into tbl_star values(4,'大陆');
  
  
  
  insert into tbl_star values(1,'司雨蒙','M',to_date('1967-09-08','yyyy-mm-dd'),'sym_001.jpg','这是司雨蒙')