The current news flying about on the net is that DDL created files do
data validation (such as on numeric fields) on the write, not on the
read.  The old-style DDS files do the checking on the read.  A very
carefully researched and written column on this very topic by Dan
Cruikshank (an IBM employee, as I understand it) appeared in a recent
iSeries Network issue.

http://www.iseriesnetwork.com/resources/artarchive/index.cfm?fuseaction=
viewarticle&CO_ContentID=20067&channel=

Joe

> From: Jon Paris
> 
> Don't forget to experiment with this before changing all of these
files!
> Unless this is something different, the only potential performance
boost I
> have heard of for SQL created files is that they use a larger paging
size.


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