How Can You Save Data In Tables But Not In The Log File?

Hi All,


I'm developing a credit card application, and would like to store some sensitive data in a table temporarily, but be absolutely positive it either never goes into the log file in the first place, or is securely deleted from the log file when I delete the data. There's millions of other bits of data in the log, so truncating or otherwise disposing of the whole log is not an option.

In particular, I'm capturing the credit card mag stripe at the beginning of a transaction, and saving it while the work is done to complete the transaction. (ie, a pilot walks in, says "Top off the G4 with JetA, here's my card, have it ready when I get back.") We want to save the swipe info for maybe a couple of hours (it is encrypted during this time), use it for the authorization, then throw it away as per credit card industry rules.

Is there any way I can save the encrypted text string in a normal MSSQL field (Varchar(200)), have it stay around for a few hours as the user logs in and out of the database, then delete the record and be sure it's nowhere in the log?

TIA,
George Lehmann
Horizon Business Concepts, Inc.
Broken Arrow, OK