無法創建2個外鍵，「errno：150」

Question

我正在做一項任務，並遇到了一個錯誤，使得其中一個外鍵失效。

第一個表：

CREATE TABLE MANUFACTURERS 
(
Manufacturers_ID int(5) UNIQUE, 
Name varchar(15) UNIQUE, 
City varchar(30), 
State char(2), 
Zip char(5), 
Phone char(10), 
PRIMARY KEY (Manufacturers_ID) 
) 
ENGINE= innodb; 

二表

CREATE TABLE OWNERS 
(
Owner_ID int(10), 
First_Name varchar(15), 
Last_Name varchar(15), 
City varchar(30), 
State char(2), 
Gender varchar(1), 
Date_of_Birth varchar(10), 
PRIMARY KEY (Owner_ID) 
) 
ENGINE= innodb; 

三表

CREATE TABLE CARS 
(
Vehicle_Identification_Number int(17) NOT NULL UNIQUE, 
Manufacturers_ID int(5) UNIQUE, 
Owner_ID int(10) UNIQUE, 
Model varchar(25), 
Manufaturer_Year int(4), 
Mileage int(10), 
Price int(10), 
PRIMARY KEY (Vehicle_Identification_Number), 
FOREIGN KEY (Manufacturers_ID) REFERENCES MANUFACTURERS (Manufactures_ID), 
FOREIGN KEY (Owner_ID) REFERENCES OWNERS (Owner_ID) 
) 
ENGINE= innodb; 

當我嘗試執行第三個表，我得到的消息：

「錯誤已經發生在執行你的SQL命令時執行。

錯誤：無法創建表「ds0004.CARS」（錯誤：150）。」

任何幫助，將不勝感激

Answer 1

您在CARS拼錯了國外參考這是正確的版本：

CREATE TABLE CARS 
(
Vehicle_Identification_Number int(17) NOT NULL UNIQUE, 
Manufacturers_ID int(5) , 
Owner_ID int(10) , 
Model varchar(25), 
Manufaturer_Year int(4), 
Mileage int(10), 
Price int(10), 
PRIMARY KEY (Vehicle_Identification_Number), 
FOREIGN KEY (Manufacturers_ID) REFERENCES MANUFACTURERS (Manufacturers_ID), 
--------------------------------------------------------------------^ 
FOREIGN KEY (Owner_ID) REFERENCES OWNERS (Owner_ID) 
)