cara menambah foreign key

Caranya panjang gan, coba lihat link ini, semoga bisa membantu https://fanihard.blogspot.co.id/2016/08/cara-membuat-foreign-key-dari-cmd.html

Sumber https://dev.mysql.com/doc/refman/5.5/en/create-table-foreign-keys.html

 CREATE TABLE parent (
    id INT NOT NULL,
    PRIMARY KEY (id)
) ENGINE=INNODB;

CREATE TABLE child (
    id INT,
    parent_id INT,
    INDEX par_ind (parent_id),
    FOREIGN KEY (parent_id)
        REFERENCES parent(id)
        ON DELETE CASCADE
) ENGINE=INNODB;