Is the original application ASP or SP.NET? It makes a difference,
particularly if it was developed to take advantage of ASP.NET 2. It might
conceivably be ASP.NET 3, but since that is brand new I can't see anyone
paying to replace an ASP.NET 3 application that was just created. If it is
ASP.NET 2, and you can't find a PostgreSQL provider class, your simplest
approach after migrating the data might be to write your own provider (check
a recent, decent reference on ASP.NET 2 for details - there are several).
OTOH, if it is ASP.NET 1.x or the earlier ASP, your planned conversion to
PHP might be worth comparing to developing it de novo with ASP.NET 3.
I am not an MS advocate, and I don't like tying myself to one vendor, but
for obvious commercial reasons I have to be aware of the options including
MS options. I recently, therefore, started studying all things .NET, and
comparing to other application frameworks I've worked with, MS seems to have
done a decent job with ASP.NET 2 and 3. Therefore, if I have a client
running mostly MS software, and time is of the essence, I would probably
make .NET, ASP.NET3 or a Windows .NET app, as the case may be, my first
choice; that is unless I find a public domain framework in Perl or PHP that
is competitive with .NET. That said, I've not had an opportunity to see how
it performs in a production setting, so YMMV.
HTH
Ted
----- Original Message -----
From: "Robert Fitzpatrick" <lists@xxxxxxxxxxx>
To: "PostgreSQL" <pgsql-general@xxxxxxxxxxxxxx>
Sent: Monday, January 22, 2007 11:05 AM
Subject: [GENERAL] MSSQL/ASP migration
I have a customer who is wants to migrate his MSSQL database to
PostgreSQL and we'll replace his application ASP with PHP. The issues
should be limited as there are no stored procedures or triggers in
MSSQL, just structure and data should be all that is needed to migrate.
I have never migrated from MSSQL or to PostgreSQL, but have handled
database migration in the past for other DB's. I know there is
mssql2pgsql script out there somewhere and I find lots of info on the
subject. Of course, when we rebuild his application, some db structure
will change, I was planning to do all the changes to structure after a
successful migration of his current structure now w/o data. After the
new application is done, then create a migration path for the data. Is
that the best way to handle these types of migrations? The customer will
want to continue working on the old system during the several months of
development in the new. Any docs or other helpful info is welcome, just
looking for some advise.
Thanks in advance,
--
Robert
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