One User database servicing multiple application databases

Question

I am administering a rather large database that has grown in complexity and design from a single application database. Now there is a plan to add a fifth application that ca

Answer 1

Don't throw out the idea of having separate applications and linking the logon/off functions via webservice (esque) requests. I have seen billing/user registration systems separated in this way. Though at extremely large scales, this might not be a good idea.