In response to Charles Stevenson, who said:
IIRC, UD routinely (usually? often? always?) stores data more like UV's
"large records".
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Unidata stores a key/displacement table at the beginning of each group, and
does not store the key physically with the data in the record for any record
(other than the first record in the group, since the key list begins at the
back end of the table and is stored in reverse order).  UniVerse's large
record handling, if I read the documentation correctly, stores the ID in the
main body of the group at the position where the record would normally be
stored, but places the data in an overflow area.  The differences between
the two U2 products are interesting if you are into optimizing file-sizing,
or if you find a particular technique in your programming tends to work
better or worse on one than on the other, as this thread seems to have
demonstrated.  I suspect the 'better' and the 'worse' are evenly
distributed, though, so please, no 'flavor' (or 'flavour', depending on your
location when you learned to spell) wars! ;-)

Susan M. Lynch
F.W. Davison & Company, Inc.

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