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  • Subject: Re: Logical Files vs. Physical Keys
  • From: "Mike Cunningham" <MCUNNING@xxxxxxx>
  • Date: Fri, 24 Mar 2000 15:41:34 -0500

Makes sense on the surface but I believe you will find that indexing a
100,000 record file with a CRTLF command is much faster than creating a
index as each of 100,000 records is added to a file. The
index-everything-at-once way is much faster than the
index-one-record-at-a-time way. Of course your CPU and memory use go way
up on the CRTLF but total time getting done is less.

>>> Gwecnal@aol.com 03/24/00 02:30PM >>>
In a message dated 00-03-23 13:32:18 EST, MCUNNING@pct.edu writes:

> I don't know if it's still a fact but 10 years ago when we set our
>  standards an unkeyed PF would copy 1,000 times faster than an
unkeyed PF
>  when it came time to add a field and copy the old PF to the new. 

Well, then you have to create the logical that gives you keyed access.
I 
believe that if you add in the time it takes to create the logical, it
is 
near enough a wash.  (I assume you did not mean unkeyed to unkeyed).
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