RE: Changing database to SQL from DDS

["Smith, Nelson" <NSmith@xxxxxxxxxxx>]

I've been interested in the same thing for some time now, but every time the
subject comes up on the list here it just degrades into a holy war over
which is the better method, rather than any meaningful discussions on the
best tools, methods, practices, etc. to use to implement a DDL-based system.


I've yet to see anyone come forward and say "Yes, we've used DDL for
everything over the last 10 years and here's what we've learned....".  Or
"We tried it, and ran into these problems...."  Some real-life experiences,
not just opinions from those of us who haven't really tried it a real
production environment.  Most of us have such heavy investments in DDS
(20-25 years of existing code) that it's hard to justify and/or sell
changing how we develop/maintain files without some real compelling reasons
for doing so. The reason that would seem to be the most compelling to me
would be tools that would make life easier, like a CODE/400 for database.
Is there such a thing? 

I would like to know (and I think this is more along the lines of what you
are asking...):  Does anyone actually use SQL's DDL on a day-to-day basis?
What has been your experience?  Did you convert over existing databases or
do you only use it for new development?  Do you maintain source members for
each file like we do with DDS, or whole Table/View/Index sets in one source
member, or even whole libraries (Collections)? Or, do you use some tool that
organizes things for you? What are the do's and don'ts you've learned the
hard way? Do you utilize a DBA to maintain everything or do programmers
maintain their own files and just adhere to some in-house standards? How
well has it been accepted by your staff programmers? 

I think (but have had no experience here) that there are a lot of PC-based
SQL tools that might make our lives easier if we were used to using SQL for
defining and maintaining our databases, but I'm not sure how easy they are
to integrate with the 400.  Has anything like this been ported to the 400
for native use?  Does anyone use something like Access to model/define their
databases and then port that to the 400?  How about data dictionaries?  Is
there anything useful or considered a standard in that area, that could then
be used to build our files from? 

> -----Original Message-----
> From: Chevalier, Rick [SMTP:Rick.Chevalier@americredit.com]
> Sent: Tuesday, January 07, 2003 3:59 PM
> To:   'midrange-l@midrange.com'
> Subject:      Changing database to SQL from DDS
> 
> My company is looking at changing our database to be SQL based instead of
> DDS.  I would like to know of anyone's experience converting files to SQL
> from DDS along with pros and cons of having your database developed in
> SQL.
> We are primarily a RPG shop with some web development.  There is also some
> data transfer between Oracle databases and our iSeries.
> 
> The posts I found in the archives were several years old and seemed to get
> bogged down in finer points of how to implement.  I'm looking for a broad
> view of the issue right now.
> 
> TIA,
> 
> Rick Chevalier
> Sr. Programmer Analyst
> 
> (817) 525-7178
> rick.chevalier@americredit.com
>  << File: ATT103476.txt >> 


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