Mr DeusExDatum is exactly "spot on" and I highly recommend that you follow him, he has very deep and extensive experience and I have had the pleasure in working with him.

The reason I focus on methodology first in my article and a specific SSIS technique was to emphasis the entire process of record linkage, obviously you would get all the exact matches out of the mix first and cycle thru the remaing with Fuzzy and utilitize various blocking criteria and even develop multiple scoring.

Mr DeusExDatum has implemented this method in real world solution.

If I am able to do a Part Duex of this topic I will seek Mr DeusExDatum contribution.