Do link tables need a meaningless primary key field?

Question

I am working on a couple of link tables and I got to thinking (Danger Will Robinson, Danger) what are the possible structures of a link table and what are their pro\'s and c

Answer 1

If this is a true many-to-many join table, then dump unecessary id column (unless your ORM requires one. in that case you've got to decide whether your intellect is going to trump your practicality).

But I find that true join tables are pretty rare. It usually isn't long before I start wanting to put some other data in that table. Because of that I almost always model these join tables as entities from the beginning and stick an id in there.