Re: Creating Logicals before or after populating a file ?

[Leo Lefebvre <leo@xxxxxxxxx>]

Evan,

I would opt for scenario no. 1: Populating the physical file and 'over time'
create those logical files. Maybe you don't need to have ALL those 20 logicals
created at once. The first logicals I would create would be the ones to be used
immediately. Then, off-hour, off-peek or whenever I would create the rest 
(trying
to balance the computer work).  Also I would try to find out how many of those
would be candidates to "share access paths" and create the most significant ones
first.

That's my view!

Leo



Evan Harris wrote:

> We are about to embark on an exercise that will populate a *large*
> database file (40 million records plus). This file has about 20 logical
> files built over it.
>
> My question is, which is more efficient:
>
> 1. Populating the file and building the logicals ?
>
> 2. Building the logicals and populating the file ?
>
> Any thoughts would be greatly appreciated.
>
> Cheers,
> Evan Harris
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--

Leo Lefebvre
leo@tug.on.ca
Toronto Users Group for Midrange Systems
Visit our home page at <http://www.tug.on.ca>
Ph: (416) 606-5960   ---   Fx: (416) 495-0100


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