Re: Variable Length fields

[John Earl <johnearl@xxxxxxxxxxxxxxx>]

Thanks Jon & David.

jte

Jon.Paris@halinfo.it wrote:
> 
> With variable length fields you specify the maximum length (32K in your 
>example)
> and an optional length to keep with the main record.  When you set the data in
> the field any length up to the "keep with the record" value will simply cause 
>a
> regular record to be written.  If the field length is longer, then the
> additional data is written to a separate area on the DASD.  By selecting an
> appropriate value for the "keep with" value you can minimize additional disk
> hits while reducing DASD usage.
> 
> The reason many people think that the whole length is used is the same as the
> reason that they think dates occupy 8 or 10 bytes (they don't - they occupy 4
> bytes) - you can never "see" anything but the expanded version of the record.
> Even with DSPPFM you see the expanded version - just as you do with dates.
> 
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--
John Earl                               johnearl@400security.com
The PowerTech Group                     206-575-0711
PowerLock Network Security              www.400security.com
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