create table question(    question_id			number(12) not null,    content			varchar2(300) not null,    correct_choice		number(6) not null,    primary key (question_id));create table answer(    question_id			number(12) not null,    choice			number(6) not null,    content			varchar2(100) not null,    primary key (question_id,choice));create sequence question_seq start with 1 increment by 1 nocycle nomaxvalue;