Hi, Now that I`ve a couple of SQL-methods working with Gadfly, I`m wondering if they will work without modification if I install a different SQL-database, like Postgres. Of course, that depends on SQL-syntax used and what part of SQL-standard the other database supports, but for rather simple SQL-stuff it should be ok, right? I hoped to create a prototype of my entire project just using Gadfly, with a very limited amount of data, then install a different database-adapter when it`s time to really shove alot of data into it. The queries might need optimization, but I`ll take those problems when they come. I just want to know if there are pitfalls to watch out for working like this? PS! Thanks for all the answers I got to my question about ZODB and ZCatalog, - it really enlightened me on some key issues in Zope I totally overlooked. Thomas