Cross database integrity

Is it possible to create foreign key between to distinct SQL databases ?
Database A contains table [customers] (primary key : customer_id)
Database B contains table [invoices] (each invoice should be linked to
a customer. Foreign key : customer_id)
I would like to create an integrity constraint between
[invoices].[customer_id] and [customers].[customer_id], despite the fact
that [invoices] et [customers] tables are in SEPARATE databases.
Is it possible to do that ?
Thanks in advance
Tom
The short answer is no. The more complex answer is: Yes, you would have to
enforce cross database constraint integrity using a Trigger. There are
security and other issues that will also have to be addressed.
Arnie Rowland, Ph.D.
Westwood Consulting, Inc
Most good judgment comes from experience.
Most experience comes from bad judgment.
- Anonymous
"Tom McLeesh" <tom.mcleesh@.gmail.com> wrote in message
news:u7%23a7148GHA.4572@.TK2MSFTNGP02.phx.gbl...
> Is it possible to create foreign key between to distinct SQL databases ?
> Database A contains table [customers] (primary key : customer_id)
> Database B contains table [invoices] (each invoice should be linked to a
> customer. Foreign key : customer_id)
> I would like to create an integrity constraint between
> [invoices].[customer_id] and [customers].[customer_id], despite the fact
> that [invoices] et [customers] tables are in SEPARATE databases.
> Is it possible to do that ?
> Thanks in advance
> Tom
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Arnie Rowland, Ph.D.
Westwood Consulting, Inc
Most good judgment comes from experience.
Most experience comes from bad judgment.
- Anonymous
"Tom McLeesh" <tom.mcleesh@.gmail.com> wrote in message
news:u7%23a7148GHA.4572@.TK2MSFTNGP02.phx.gbl...
> Is it possible to create foreign key between to distinct SQL databases ?
> Database A contains table [customers] (primary key : customer_id)
> Database B contains table [invoices] (each invoice should be linked to a
> customer. Foreign key : customer_id)
> I would like to create an integrity constraint between
> [invoices].[customer_id] and [customers].[customer_id], despite the fact
> that [invoices] et [customers] tables are in SEPARATE databases.
> Is it possible to do that ?
> Thanks in advance
> Tom