On Sun, 6 Oct 2002, Simon Wistow wrote: > Genres: > id > name
I think this is the redundant one. > Ratings: > user id > film id > genre id <-- for speed of look ups? Because an enumerated type also maps a name to number, and uses the number for searching, only it then does the conversion on input/output. I'm not a db expert, but this is certainly my understanding. > And then loop throough the films looking for the most popular film of > the genre that the user likes most. I suspect you can ask the db to do that bit too, using a bit more sql, and a liberal sprkinkling of comparisions and max()s the hatter
