text: -- migrate:up
  
  CREATE TABLE documents (
  	id	INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
    name	VARCHAR(50) NOT NULL,
    description	TEXT,
    url VARCHAR(50),
    event_id	INT,
    FOREIGN KEY (event_id) REFERENCES events(id) ON DELETE CASCADE
  );
  
  -- migrate:down
  
  DROP TABLE IF EXISTS documents;