“Follow user” database table design

Question

I\'m trying to determine the best table design for a \"follow/unfollow user\" feature, similar to Twitter (edit: I\'m not making a Twitter-like application.

Answer 1

I would suggest you make follower and following together the primary key. There is no need for a seperate id field.

Answer 2

I think it's a very good design, and should meet your needs nicely. One thing; you should probably make the follower and following foreign keys. Oh, and for simplicity sake, I'd make the subscribed column TIMESTAMP DEFAULT CURRENT_TIMESTAMP just to capture the datetime the user subscribed.