Here's another approach ...

If you have an [Address] table and a [Person] table you can use a
[PersonAddress] (junction) table to show which person at which address
(using the primary keys of each). If you then add a FromDate and a ToDate
field to that junction table, you can end-effective date Joe's old address
and begin using the new address (actually, the new AddressID).

If you need to keep history of which address was used to mail objectX,
include the AddressID in your record of mailing.

Good luck!

Regards

Jeff Boyce
Microsoft Access MVP

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"icccapital" wrote in message
...
I was curious to get some ideas for the best way to maintain the address of
mailers that had been sent out.

So by way of example we send out mailers or invoices periodically. And
lets
say they go to Joe Smith at 1 place last quarter. Now when Joe Smith
changes
his address we then send it to 2 Other Place. Originally I had designed
the
database to have the linking table with the invoice number and the client
contact ID, but the issue with that is that when Joe Smith changes his
address it appears that we sent the invoice last quarter to the new
address.

Theoretically, what do you guys think is the best way to manage this. I
could copy the address into the linking table and get rid of the contact
ID.
Or create a new contact id and copy the address and person into a new
table
that basically represents that period's address information. So Joe Smith
would be in this table twice, once with old address with the last quarter
date and once with new address and this quarter's date and the linking
table
would point to the ID for these. What do you think?