Interesting read with relation to this topic:

Let's Hash a BLOB by Michael Coles

Perhaps more applicable to hashing techniques outside of ETL loading, or those paranoid...

belldb (6/8/2010)

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I see what you're trying to point out, but keep in mind that the basis for checking individual records is 1:1 because the lookup is joined on the primary...

Better yet, I never even use MD5 because the chance for collision is much higher than SHA1. I'd highly recommend not using MD5 for large databases and only using...

Personally I'm not a fan of even allowing someone any access to the report directory if they don't have sufficient rights for all the reports in the directory. For...