That would work for simpler sites, but as I stated this “single sign on” as you called it will be used in far more than WordPress and phpBB.
Also different sites and applications will require/use different user info and password encryption etc. this is far more easily maintained using a separate user database in my opinion.
Maybe I wasn’t clear in my previous post but what I wanted to know was whether it would be better to set up some copy or relation between WordPress’s database and the user database or if altering WordPress to access the user database directly would be more beneficial.
I appreciate that you took the time to answer even though it was not the answer I was looking for, maybe now others will better understand what I wanted to know.
