Jon
so we are talking about a 1.5 ratio (in days) for each online program ?
Jon Paris <jon.paris@xxxxxxxxxxxxxx>
Sent by: web400-bounces@xxxxxxxxxxxx
20-01-2010 22:00
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Web Enabling the AS400 / iSeries <web400@xxxxxxxxxxxx>
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Re: [WEB400] WEB400 Digest, Vol 8, Issue 40
On Jan 20, 2010, at 1:00 PM, web400-request@xxxxxxxxxxxx wrote:
what do you estimate a modernization of, lets say, 500 online 5250
programs will cost in hours spend ?
you may or may not choose to break it into development platforms PHP
vs.
PHP/Zend - Ruby vs. Ruby on Rails eg.
Too many variables.
Style of code
Size and complexity of programs
Number of databases involved
Degree of MVC currently in play
Tools availability
etc. etc. etc.
I've rarely seen a case where "hours" would be the appropriate measure
though - days or even man months are more meaningful measurements.
Don't know what sort of figures Databorough use these days but they do
these kinds of conversions I believe.
In the days when I used to specialize in application porting (platform
to platform) we used to use a ballpark figure of one day per on-line
program plus .5 of a day for each database or batch program. Crazy as
it sounds, it was actually remarkably accurate in practice. On one
particular project we were working with another vendor who insisted on
a formal estimation process. They spent two weeks estimating the
project before coming up with their numbers. By the time it was all
completed, their figures were off by 200% and we were within 5%!
Sometimes just licking your finger an holding it up is every bit as
accurate as any other method.
Jon Paris
www.Partner400.com
www.SystemiDeveloper.com
midrange.com
