Best method for storing a list of user IDs

Question

I\'m working on a PHP/MySQL rating system right now. For the user to be able to rate the user has to log in. Each user has a unique \"UID\". There will be multiple rating in

Answer 1

In a normalized database, you should store it in a junction table:

UserRatings
-------------
RatingID int
UserID int
UserVote int

I don't know what are your queries. Depending on the application, this might not have the acceptable performance. However, in either case, I suggest you go with the normalized approach, benchmark, and denormalize only if appropriate.