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Design theory for maintaining historical address communications
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? |
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