BCM doesn't use a central database like that. Each user has their own local database, but they can be shared. Also, note that BCM is installed locally, not on the Exchange server.
FYI, there is a separate newsgroup for BCM issues -- microsoft.public.outlook.bcm

Signature
Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003
http://www.turtleflock.com/olconfig/index.htm
and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx
I am interpreting from your response - If databases can be shared, we could
use one database and share it between all users, but it would have to reside
on a client PC rather than a server? The only problem I foresee would be the
stability/security of using a client as a db host. i.e relying on the user of
that machine to leave the machine logged in at all times so others can access
it.
If our intent to use it as a central repository of CRM management is
off-base what is the point of sharing databases?
> BCM doesn't use a central database like that. Each user has their own local database, but they can be shared. Also, note that BCM is installed locally, not on the Exchange server.
>
[quoted text clipped - 7 lines]
> > or is there specific patch for such cases?
> > Thanks!
Sue Mosher [MVP-Outlook] - 26 Jan 2006 19:34 GMT
As I understand it, the latest version of BCM still requires each user to be running their own local MSDE database instance, but it does support some sharing, I imagine through replication from one user's copy of the database to another. The place to ask for more technical details would be the BCM newsgroup I suggested.
Bottom line, though, is that BCM is not a centralized database as you would normally think of it. BCM was originally designed as a standalone, personal contact management tool. Sharing was added later.
It sounds like what you want is something more like Microsoft CRM, which was designed from the ground up as a centralized, server-based database.

Signature
Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003
http://www.turtleflock.com/olconfig/index.htm
and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx
>I am interpreting from your response - If databases can be shared, we could
> use one database and share it between all users, but it would have to reside
[quoted text clipped - 17 lines]
>> > or is there specific patch for such cases?
>> > Thanks!