it creates a keyed logical file with all the fields in it.

But that's an important distinction. If you create a DDS LF and name the
fields those are the only fields in the lf, even if you add more to the
table. However, the LF created from an index will change automatically
to have any new fields in it. So if you're using that LF in a 3GL you
need to be worried about level checks.

One of the great things about SQL is the ability to add columns w/out
regard to level checks. Don't break that by using indexes in 3GL
programs for RLA.

-Walden


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