mysql建表: 主键,外键约束

CREATE DATABASE db_studentinfo;
USE db_studentinfo ; DROP TABLE IF EXISTS t_student ;
CREATE TABLE t_student(
studentId varchar(40) NOT NULL,
stuNo varchar(20) DEFAULT NULL,
stuName varchar(20) DEFAULT NULL,
stuSex varchar(10) DEFAULT NULL,
stuBirthday date DEFAULT NULL,
stuRxsj date DEFAULT NULL,
stuNation varchar(20) DEFAULT NULL,
stuZzmm varchar(20) DEFAULT NULL,
classId int(11) DEFAULT NULL,
stuDesc text,
stuPic varchar(20) DEFAULT NULL,
PRIMARY KEY ( studentId )
) ENGINE=InnoDB DEFAULT CHARSET=utf8; DROP TABLE IF EXISTS t_class ;
CREATE TABLE t_class(
classId int(11) NOT NULL AUTO_INCREMENT,
className varchar(20) DEFAULT NULL,
gradeId int(11) DEFAULT NULL,
classDesc text,
PRIMARY KEY ( classId )
) ENGINE=InnoDB AUTO_INCREMENT=8 DEFAULT CHARSET=utf8; DROP TABLE IF EXISTS t_grade ;
CREATE TABLE t_grade(
gradeId int(11) NOT NULL AUTO_INCREMENT,
gradeName varchar(20) DEFAULT NULL,
gradeDesc text,
PRIMARY KEY(gradeId)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8; insert into t_student(studentId , stuNo , stuName , stuSex , stuBirthday , stuRxsj , stuNation , stuZzmm , classId , stuDesc , stuPic ) values ('10bea402-23e4-4066-a4fd-534c3798a7d7','0011','美女111','男','2014-05-16','2014-06-08','回族','共青团员',5,'美女12222222','20140712081542.jpg'),('13','21',NULL,NULL,NULL,NULL,NULL,NULL,4,NULL,NULL),('14','21',NULL,NULL,NULL,NULL,NULL,NULL,4,NULL,NULL),('15','2',NULL,NULL,NULL,NULL,NULL,NULL,4,NULL,NULL),('17','2',NULL,NULL,NULL,NULL,NULL,NULL,4,NULL,NULL),('18','2',NULL,NULL,NULL,NULL,NULL,NULL,4,NULL,NULL),('19','小三','21','女','2014-05-14','2014-05-14','汉族','中*员',5,'是','20140502030158.jpg'),('4','11','212','男','2014-04-08','2014-04-05','蒙古族','*预备党员',4,'21','20140429052236.JPG'),('5','11','21','男','2014-04-08','2014-04-05','蒙古族','*预备党员',4,'21','20140429052433.JPG'),('6','21','2','男','2014-04-08','2014-04-05','蒙古族',NULL,4,NULL,NULL),('7fac0234-59ef-46ea-981a-de50d24741b2','000','11','男','2014-07-10','2014-07-09','汉族','中*员',4,'测试图片','20140710090403.jpg'),('a1cf592d-d9d4-4de1-b8ff-0db7e9852411','sss22','ss2','女','2014-05-08','2014-05-10','蒙古族','共青团员',3,'大2','20140508022528.jpg'),('a8a1816b-f24c-4fb9-b160-c8c107c80acf','21','321','男','2014-05-13','2014-05-15','蒙古族','民革党员',3,'123','20140508020709.jpg'),('b53b0b8a-7f1c-4254-8cff-e8353902f012','121','21','男','2014-07-09','2014-07-16','汉族','中*员',3,'21','');
insert into t_class ( classId , className , gradeId , classDesc ) values (3,'09计本',2,'22'),(4,'08计本',1,'111'),(5,'08网本',1,'222'),(6,'10网本',3,'22'),(7,'10计本',3,'10年级计算机本科');
insert into t_grade(gradeId , gradeName , gradeDesc) values (1,'08级','111'),(2,'09级','222'),(3,'10级','33'); DROP TABLE IF EXISTS t_datadic ; CREATE TABLE t_datadic(
ddId int(11) NOT NULL AUTO_INCREMENT,
ddTypeId int(11) DEFAULT NULL,
ddValue varchar(20) DEFAULT NULL,
ddDesc text,
PRIMARY KEY ( ddId )
) ENGINE=InnoDB AUTO_INCREMENT=343 DEFAULT CHARSET=utf8; DROP TABLE IF EXISTS t_datadictype ; CREATE TABLE t_datadictype(
ddTypeId int(11) NOT NULL AUTO_INCREMENT,
ddTypeName varchar(20) DEFAULT NULL,
ddTypeDesc text,
PRIMARY KEY(ddTypeId)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8; insert into t_datadic( ddId , ddTypeId , ddValue , ddDesc ) values (1,1,'男','1'),(2,1,'女',NULL),(3,2,'中*员',NULL),(4,2,'*预备党员',NULL),(5,2,'共青团员',NULL),(6,2,'民革党员',NULL),(7,2,'民盟盟员',NULL),(8,2,'民建会员',NULL),(9,2,'民进会员',NULL),(10,2,'农工党党员',NULL),(11,2,'致公党党员',NULL),(12,2,'九三学社社员',NULL),(13,2,'台盟盟员',NULL),(14,2,'无党派人士',NULL),(15,2,'普通公民',NULL),(16,2,'港澳同胞',NULL),(17,2,'叛徒',NULL),(18,2,'反革命分子',NULL),(334,3,'汉族',NULL),(335,3,'蒙古族',NULL),(336,3,'回族',NULL),(337,3,'藏族',NULL),(338,3,'*',NULL),(339,3,'门巴族',NULL),(340,3,'外国血统',NULL),(342,3,'哈哈族','11');
insert into t_datadictype( ddTypeId , ddTypeName , ddTypeDesc ) values (1,'性别','121'),(2,'政治面貌',NULL),(3,'名族',NULL); DROP TABLE IF EXISTS t_user ; CREATE TABLE t_user(
userId int(11) NOT NULL AUTO_INCREMENT,
userName varchar(20) DEFAULT NULL,
password varchar(20) DEFAULT NULL,
PRIMARY KEY ( userId )
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;
insert into t_user( userId , userName , password ) values (1,'java1234','12'); alter table t_student add constraint FK_t_student foreign key(classId) REFERENCES t_class ( classId );
alter table t_class add constraint FK_t_class foreign key(gradeId) REFERENCES t_grade(gradeId);
alter table t_datadic add constraint FK_t_datadic foreign key(ddTypeId) REFERENCES t_datadictype (ddTypeId);

  

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