You can have duplicate keys in a path that uses an alternate index to 
access a KSDS.  The "true key" built by VSAM for the alternate index has a 
tie-breaker field.

What does it mean to "have a dup" in an ESDS?  There is no key?

pup

IBM Mainframe Discussion List <[email protected]> wrote on 08/28/2006 
02:53:13 PM:

> You should not have dups in a KSDS file.  During write processing you
> should have had a dupkey condition raised.

> For ESDS I would probably use SORT/MERGE and tell it to drop dups.

> Mark D Pace



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