错误：错误1005：无法创建表（errno：121）?mysql

我将forward engineering我的MySQL数据库插入WAMP服务器时遇到了麻烦。我打算发布模式的图像，但这是我不能的第一篇文章。

下面是执行的脚本。

use aquaticstar;

SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0; SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0; SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='TRADITIONAL,ALLOW_INVALID_DATES';

-- Table Students

DROP TABLE IF EXISTS Students ;

CREATE TABLE IF NOT EXISTS Students ( id VARCHAR(10) NOT NULL , studentName VARCHAR(45) NOT NULL , gender CHAR NOT NULL , birthDate DATETIME NOT NULL , mNo VARCHAR(10) NOT NULL , contactName VARCHAR(45) NOT NULL , contactEmail VARCHAR(45) NOT NULL , contactPhone INT(10) NOT NULL , startDate DATETIME NOT NULL , remarks VARCHAR(200) NULL , PRIMARY KEY (id) ) ENGINE = InnoDB;

-- Table Waiting List

DROP TABLE IF EXISTS Waiting List ;

CREATE TABLE IF NOT EXISTS Waiting List ( wait_id VARCHAR(5) NOT NULL , name VARCHAR(45) NULL , contactName VARCHAR(45) NULL , contactPhone INT(10) NULL , contactEmail VARCHAR(45) NULL , status CHAR NULL , remarks VARCHAR(200) NULL , PRIMARY KEY (wait_id) ) ENGINE = InnoDB;

-- Table Schedule

DROP TABLE IF EXISTS Schedule ;

CREATE TABLE IF NOT EXISTS Schedule ( lesson_id VARCHAR(10) NOT NULL , day VARCHAR(3) NOT NULL , branch VARCHAR(30) NOT NULL , level VARCHAR(30) NOT NULL , time TIME NOT NULL , ae VARCHAR(45) NOT NULL , PRIMARY KEY (lesson_id) ) ENGINE = InnoDB;

-- Table Link

DROP TABLE IF EXISTS Link ;

CREATE TABLE IF NOT EXISTS Link ( link_id VARCHAR(10) NOT NULL , id VARCHAR(10) NOT NULL , lesson_id VARCHAR(10) NOT NULL , PRIMARY KEY (link_id) , INDEX id_idx (id ASC) , INDEX lesson_id_idx (lesson_id ASC) , CONSTRAINT id FOREIGN KEY (id ) REFERENCES Students (id ) ON DELETE NO ACTION ON UPDATE NO ACTION, CONSTRAINT lesson_id FOREIGN KEY (lesson_id ) REFERENCES Schedule (lesson_id ) ON DELETE NO ACTION ON UPDATE NO ACTION) ENGINE = InnoDB;

-- Table Attendance

DROP TABLE IF EXISTS Attendance ;

CREATE TABLE IF NOT EXISTS Attendance ( date DATETIME NOT NULL , attendance VARCHAR(5) NOT NULL , link_id VARCHAR(10) NOT NULL , INDEX link_id_idx (link_id ASC) , CONSTRAINT link_id FOREIGN KEY (link_id ) REFERENCES Link (link_id ) ON DELETE NO ACTION ON UPDATE NO ACTION) ENGINE = InnoDB;

SET SQL_MODE=@OLD_SQL_MODE; SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS; SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS;

-- Data for table Students

START TRANSACTION; INSERT INTO Students (id, studentName, gender, birthDate, mNo, contactName, contactEmail, contactPhone, startDate, remarks) VALUES ('s001', 'Sam Khew', 'm', '12/12/1991', 'nm', 'May Khew', 'may@gmail.com', 0198829387, '12/07/2011', NULL); INSERT INTO Students (id, studentName, gender, birthDate, mNo, contactName, contactEmail, contactPhone, startDate, remarks) VALUES ('s002', 'Joe Biden', 'm', '13/03/2003', 'nm', 'Layla Biden', 'layla@gmail.com', 0199283763, '14/05/2011', NULL); INSERT INTO Students (id, studentName, gender, birthDate, mNo, contactName, contactEmail, contactPhone, startDate, remarks) VALUES ('s003', 'Bob Builder', 'm', '14/02/2002', 'LK920K', 'Mama Builder', 'mama@yahoo.com', 0167728376, '29/02/2012', NULL); INSERT INTO Students (id, studentName, gender, birthDate, mNo, contactName, contactEmail, contactPhone, startDate, remarks) VALUES ('s004', 'Kenny Koh', 'm', '18/02/1999', 'MM992', 'Lisa Koh', 'lk@hotmail.com', 0123160231, '19/01/2012', NULL); INSERT INTO Students (id, studentName, gender, birthDate, mNo, contactName, contactEmail, contactPhone, startDate, remarks) VALUES ('s005', 'Jane Doe', 'f', '29/09/1999', 'nm', 'Jackie Doe', 'jackied@gmail.com', 0127736254, '02/03/2012', NULL); INSERT INTO Students (id, studentName, gender, birthDate, mNo, contactName, contactEmail, contactPhone, startDate, remarks) VALUES ('s006', 'Lola Lai', 'f', '02/05/2004', 'nm', 'Mark Lai', 'mark@gmail.com', 0198827365, '11/09/2011', NULL);

COMMIT;

-- Data for table Schedule

START TRANSACTION; INSERT INTO Schedule (lesson_id, day, branch, level, time, ae) VALUES ('sat1_s4', 'Sat', 'Sunway', 'basic', '4pm', 'Aini'); INSERT INTO Schedule (lesson_id, day, branch, level, time, ae) VALUES ('sat1_s5', 'Sat', 'Sunway', 'basic', '5pm', 'Aini'); INSERT INTO Schedule (lesson_id, day, branch, level, time, ae) VALUES ('sat1_s6', 'Sat', 'Sunway', 'basic', '6pm', 'Aini'); INSERT INTO Schedule (lesson_id, day, branch, level, time, ae) VALUES ('sat2_s4', 'Sat', 'Sunway', 'advance', '4pm', 'Nina'); INSERT INTO Schedule (lesson_id, day, branch, level, time, ae) VALUES ('sat2_s5', 'Sat', 'Sunway', 'advance', '5pm', 'Nina'); INSERT INTO Schedule (lesson_id, day, branch, level, time, ae) VALUES ('sat3_s6', 'Sat', 'Sunway', 'pre-comp', '6pm', 'Marcus');

COMMIT;

-- Data for table Link

START TRANSACTION; INSERT INTO Link (link_id, id, lesson_id) VALUES ('L001', 's001', 'sat1_s4'); INSERT INTO Link (link_id, id, lesson_id) VALUES ('L002', 's002', 'sat1_s5'); INSERT INTO Link (link_id, id, lesson_id) VALUES ('L003', 's003', 'sat1_s6'); INSERT INTO Link (link_id, id, lesson_id) VALUES ('L004', 's004', 'sat2_s4'); INSERT INTO Link (link_id, id, lesson_id) VALUES ('L005', 's005', 'sat1_s5');

COMMIT;

-- Data for table Attendance

START TRANSACTION; INSERT INTO Attendance (date, attendance, link_id) VALUES ('26/9/2012', '1', NULL);

COMMIT; 但是然后我得到这个错误：

Executing SQL script in server ERROR: Error 1005: Can't create table 'aquaticstar.link' (errno: 121) 我不知道为什么。谁能帮我？