stovepiping is your friend
your new database should have datagathering pipes to the other applications. However Drew is correct, you have a strenuous data cleaning job before you do anything.
thanks,
Bill
Any opinions expressed by me are mine alone, posted from my home computer, on my own time as a free american and do not reflect the opinions of any person or company that I have had professional relations with in the past 50 years. meep