[Info-vax] CRTL and RMS vs SSIO

[Simon Clubley]

On 2021-10-13, Dave Froble <davef at tsoft-inc.com> wrote:
> On 10/13/2021 7:23 PM, Arne Vajhøj wrote:
>> With a relational database in is one SQL statement.
>>
>> With an index-sequential file it is writing a conversion program.
>
> Not always.  With DAS that utility already exists.  And a bunch more 
> utilities, that work with any DAS file.
>
> RMS isn't the only product around ...
>

Can that utility be used while existing programs which don't need the
new field continue to run at the same time as you are adding the new
field ?

If yes, is this still true if you are not allocating the new field
out of existing dead space in the record and need to extend the
underlying record to hold the new field ?

IOW, is there any application downtime while you are adding the new
field in DAS ?

Simon.

-- 
Simon Clubley, clubley at remove_me.eisner.decus.org-Earth.UFP
Walking destinations on a map are further away than they appear.