Hi,
from a user perspective, the only thing you need to know is which field is indexed for your searches and rules to run efficiently.
Here's a page that explains this matter:
https://www-01.ibm.com/support/docview.wss?uid=swg21689802SuperIndex refers to the Ariel database, but you don't really need to worry about this unless your the system admin and you're having disk space issues.
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Anthony Gayadeen, Videotron Ltd
Montreal QC
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