A lot of people used to code their applications to "R83" or least common
denominator. The company I worked for 15 years ago had a mix of Adds Mentor,
Stratus OA, Power95 and a small universe system at a satellite office. We
bought a new accounting system that was written to R83. The vendor was a var
for Mentor and favored that, but their system easily installed and ran on the
Stratus and Power95 systems as well. But then we decided we wanted to upgrade
the universe system and have all our accounting users on that. Just about
everything else was ok, but it took the var 3 months of work to convert the
procs to work on universe. (but oh my god it was worth the wait. I recoded some
of their app and our core application to take advantage of universe's type 25
btree files and then the user experience was literally a million times faster)
Then there are the little time bombs like:
A=CONVERT('ABC','C','XABCX')
On universe or unidata this is the equivalent of
CONVERT 'ABC' TO 'C' IN 'XABCX'
and A='XCX' but on d3 it is
CONVERT 'C' TO 'XABCX' IN 'ABC'
and A='ABX'
You may convert the application in a few hours, but you'll be debugging it for
months :) Or it might just work. The only big snag in the accounting
application I mentioned (and it was a large app with lots of programs) was proc.
On Apr 14, 2011, at 5:08 PM, Charles Barouch wrote:
> Depends on how 'vanilla it is. I worked in a shop where the owners would
> routineky sell the dev systems out from under us and we'd have to pick up on
> whatever they bought as a substitute.
> That package was easy to port because everything was coded assuming least
> common denominator approach.
>
>
> Charles Barouch
>
> Don Robinson <donr_w...@yahoo.com> wrote:
>
>> Symeon,
>>
>> Hum, I'd offer the guy $200.00 to do the job if he thinks it's that easy!
>>
>> I've worked on a couple of conversion between MV systems and there are a lot
>> of
>> differences. In my opinion D3 if very different from Unidata or Universe or
>> jBASE or Reality or you name it.
>>
>> I just inherited a D3 system and it's awful switching between it and
>> Universe
>> because of all the differences.
>>
>> Not to disappoint you, just my 2 cents.
>>
>> Don Robinson
>> Universe and D3 programmer.
>>
>>
>>
>> ________________________________
>> From: Symeon Breen <syme...@gmail.com>
>> To: U2 Users List <u2-users@listserver.u2ug.org>
>> Sent: Wed, April 6, 2011 5:14:15 PM
>> Subject: [U2] Databasic conversion
>>
>> Hi I am looking at a little side project to convert an entire system written
>> in databasic on D3 to run on unidata.
>>
>>
>>
>> The guy i work with says it is a couple of hours work - I am not so sure
>> myself. Anyone done this and know what the 'gotchyas' are ?
>>
>>
>>
>>
>>
>> Cheers
>>
>> Symeon.
>>
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