JSP选课系统

create table yonghu( id number(10) primary key, username varchar2(45) not null, password varchar2(45) not null, stage varchar2(45) not null); create table student( id number(10) primary key, xuehao varchar2(45) not null, xingming varchar2(45) not null, sex varchar2(45) not null, age varchar2(45) not null, banji varchar2(45) not null); create table cource( id number(10) primary key, courcename varchar2(45) not null, teacher varchar2(45) not null, jiaoshi varchar2(45) not null, time varchar2(45) not null, score number(10) not null); create table class( id number(10) primary key, courcename varchar2(45) not null, teacher varchar2(45) not null, jiaoshi varchar2(45) not null, time varchar2(45) not null, score number(10) not null, xuehao varchar2(45) not null);