MYSQL工作台-錯誤1215：無法添加外鍵約束

Question

現在，在將其標記為重復之前，我經歷了許多堆棧溢出解決方案。

名稱匹配

數據類型匹配

兩者都不為空，

可能是什么問題呢？

這是我的代碼：

create database Registration;
use Registration;

create table Department(DepartmentID varchar(25) NOT NULL, DepartmentName varchar(25),
PRIMARY KEY(DepartmentID));
insert into Department(DepartmentID, DepartmentName) values ('DE1', 'Engligh');
insert into Department(DepartmentID, DepartmentName) values ('DS2', 'Science');
insert into Department(DepartmentID, DepartmentName) values ('DM3', 'Math');

create table Course(CourseID varchar(25), CourseName varchar(25), DepartmentID varchar(25) NOT NULL,
PRIMARY KEY (CourseID),
FOREIGN KEY(DepartmentID) REFERENCES Departmnet(DepartmentID));

Answer 1

create table Course(CourseID varchar(25), CourseName varchar(25),  DepartmentID varchar(25) NOT NULL,
PRIMARY KEY (CourseID),
FOREIGN KEY(DepartmentID) REFERENCES Department(DepartmentID));

您在參考表名稱DEPARTMENT中犯了拼寫錯誤