/*25. Write a query in SQL to find the movie title, year, date of release, director and actor for those movies which reviewer
 is unknown.*/

SELECT mov_title, mov_year, mov_dt_rel, dir_fname, dir_lname,   
       act_fname, act_lname  
       FROM movie a, movie_direction b, director c,   
                rating d, reviewer e, actor f, movie_cast g  
       WHERE a.mov_id=b.mov_id  
AND  b.dir_id=c.dir_id   
 AND a.mov_id=d.mov_id   
  AND  d.rev_id=e.rev_id   
   AND  a.mov_id=g.mov_id   
    AND g.act_id=f.act_id   
     AND e.rev_name IS NULL;