多对多关系数据库表 java描述

多对多关系 需要建立一张新表存放它们的对应数据

sql语句

 1 create table teacher(
 2     id int primary key,
 3     name varchar(100),
 4     money float(8,2)
 5 );
 6 create table student(
 7     id int primary key,
 8     name varchar(100),
 9     grade varchar(10)
10 );
11 create table teacher_student(
12     t_id int,
13     s_id int,
14     primary key(t_id,s_id),
15     constraint t_id_fk foreign key(t_id) references teacher(id),
16     constraint s_id_fk foreign key(s_id) references student(id)
17 );

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