george sibbald (5/31/2012)
the maximum number of databases per instance is 32767, therefore the maximum DBID = 32767, I would say thats the reason this number was chosen for the resource database, its as far out of the way of potential user database dbids as you can get.
If I were using a sequence or an identity to implement new database ID's then 0 would be out of the way. That's what I was thinking was illogical.