Keeping referential integrity across multiple databases

Question

What are the best practices for keeping referential integrity across multiple databases? since there\'s no built-in functions

Or is it better to partition a single datab

Answer 1

I'd rather have one database. Explained here:

http://sqlblog.com/blogs/alexander_kuznetsov/archive/2008/05/13/be-aware-of-these-loopholes-in-your-referential-integrity.aspx