Hibernate复合主键作外键该怎么样配置

Hibernate复合主键作外键该怎么样配置

drop database choose ; create database choose ; use choose; --student create table student( sId char(10) not null primary key, sName char(20) not null, sPwd char(20) not null );
create unique index PK_student on student(sId); --course create table course( coId char(10) not null primary key, coName char(20) not null, credit float(53) not null );
create unique index PK_course on course(coId); --chooseCourse create table chooseCourse( coId char(10) not null, sId char(10) not null, grade float(53), primary key(coId,sId), foreign key (coId) references course(coId), foreign key (sId) references student(sId) );