text: CREATE TABLE IF NOT EXISTS TBL_CATEGORIES (
      id INT AUTO_INCREMENT PRIMARY KEY,
      category_name VARCHAR(70) NOT NULL,
      color VARCHAR(7) NOT NULL,
      active BOOLEAN NOT NULL
  );
  
  CREATE TABLE IF NOT EXISTS TBL_CATEGORY_SCHEDULES (
    id INT AUTO_INCREMENT PRIMARY KEY,
    schedule_date INT NOT NULL,
    fk_categories_id INT NOT NULL,
    active BOOLEAN NOT NULL
  );
  
  ALTER TABLE TBL_CATEGORY_SCHEDULES ADD FOREIGN KEY ( fk_categories_id ) REFERENCES TBL_CATEGORIES( id );