create sequence phone_t_idx
increment by 1
start with 1
nomaxvalue
nocycle
cache 10;

create table phone_t(
	idx number,
	name varchar2(20),
	cellPhone varchar2(15),
	b_day date,
	constraint phone_t primary key(idx)
);

create or replace procedure del_phone(p_num varchar2)
is
begin
	delete from phone_t where cellPhone = p_num;
end;
/