Hi Max, thanks for that hint. I had tried IxSet by itself and was unaware that Happs-state might be a solution. Performance *is* a problem, not time but space. If you meant a time performance problem, that'd be acceptable, the app with SQLite is running too fast as it is. But the machines this app is supposed to be able to run are Win2k machines, so a space performance problem *is* a problem. Which one did you mean? Günther Am 06.08.2009, 07:19 Uhr, schrieb Max Desyatov :

As I can say from my experience of usage of hdbc-sqlite3 and happstack-state, the latter covers everything you ever wanted from sqlite3 and more. It you aren't too concerned about performance, you can free yourself from many tedious routines that are imminent when you work with relational database. Elaborated data model design coupled with some generics technique (uniplate with derive, e.g.) gives you a possibility to write down your domain problem directly to haskell.

CK Kashyap writes:

...

I'd be very interested to see a rdbms implementation in Haskell ... perhaps a port of sqlite

Regards, Kashyap