A Plan for Successful Legacy Data Conversion | Business intelligence, data warehousing and analytics editorial from DMReview
Rarely is the extraction a case of migrating data from the source to the destination without having to perform data corrections or transformations. Conversions to a new system generally require mapping old data elements to new elements in a new data structure.
This is so appropriate. I think the author went to the same school that I did.
I note that the “extraction” of reporting is given a brief nod. Of course this is far more difficult (and political) than the mere migration and transformation of the data.