Nemeth Miklos wrote:

The Gadfly shipped with Zope is really useful only for demo purposes, what to do if I want to use Gadfly for production (in a real life ecommerce application) purposes (storing business data, SQLSession's data)?

This text is shown by Zope: "The Zope Gadfly product is a free Zope database adapter intended for demonstration purposes only. It is only suitable for learning about Zope SQL Methods. Database operations are performed in memory, so it should not be used to create large databases. This installation is using a non-optimized version of Gadfly and should not be used to assess the performance of either Gadfly or Zope."

IMHO, PostgreSQL or MySQL is a better solution than gadfly. And in a REAL ecommerce app, you should consider Oracle or DB2 or Sybase. btw, is there any DB2 adapter for python ?