Creating relationships between different databases

Hello guys,
Does anybody know how can i create a relationship between tables in different databases? Does SQL Server supports this kind of operation?
The main problem is that i have some data that is shared between different databases and i'd like to have some kind of referencial integrity in the data that is stored on the separated databases by using the same shared tables. I could use triggers for do
ing that but this will decrease the performance of my databases dramatically.
Thanks for the help,
Paulo R.
Even if SQL Server did support it (which I don't believe it does) it would
be a very poor design. What if the databases were installed on separate
servers? That would be a real mess. If the tables are that important for a
database then some sort of replication from one database to the other would
be a better solution.
Jim
"Paulo" <paulo@.specforeclosure.com> wrote in message
news:4B7733D7-AFCE-4992-9734-59C7FA38194A@.microsoft.com...
> Hello guys,
> Does anybody know how can i create a relationship between tables in
different databases? Does SQL Server supports this kind of operation?
> The main problem is that i have some data that is shared between different
databases and i'd like to have some kind of referencial integrity in the
data that is stored on the separated databases by using the same shared
tables. I could use triggers for doing that but this will decrease the
performance of my databases dramatically.
> Thanks for the help,
> Paulo R.
|||>>Does SQL Server supports this kind of operation?<<
Cross database ref. integrity is not supported in SQL Server.
BOL: "FOREIGN KEY constraints can reference only tables within the same database on the same
server. Cross-database referential integrity must be implemented through triggers. For more
information, see CREATE TRIGGER. "
So this can be accomplished through triggers.
See following topic in bol.
"FOREIGN KEY Constraints"
Vishal Parkar
vgparkar@.yahoo.co.in