数据库表中一对多关系怎么设计？

database design（数据库设计） 

马克-to-win：

(一对多：one-to-many)

1) teacher and student.

(teacher表:两列id（主键）,name。
pupil表: 三列：id（主键）,name,tid(外键))

 

举例： teacher "qixy" has two students: liyaohua,fuwenlong. teacher "huanglaosh" has two students: mashuai,jiaxiaohu.

create table pupil(id int not null,name char(10),tid int);

create table teacher(id int not null,name char(10));

insert into pupil (id,name,tid) values(1,'liyaohua',1);
insert into pupil (id,name,tid) values(2,'fuwenlong',1);
insert into pupil (id,name,tid) values(3,'mashuai',2);
insert into pupil (id,name,tid) values(4,'jiaxiaohu',2);

详情请看：http://www.mark-to-win.com/index.html?content=mydb/dburl.html&chapter=mydb/dbintroduction_web.html#designonemany