From: Rene de Visser [mailto:rene_de_visser@hotmail.com]

I would rather use Haskell also for the persistency, global constraint maintanence, etc... rather than using an external database.

The only thing I have found so far is HApps, but I haven't figure out how that works.

Is there anything else?

What do you mean by "external" database? If you just mean "on another server, accessed via a separately installed library or API" then you should consider Sqlite as a persistence storage solution. It's a doddle to install on common platforms, and consists of a single library which links to your program i.e. it runs in the same process-space. Both HSQL (and therefore HaskellDB, as it uses HSQL) and Takusen support Sqlite. http://haskelldb.sf.net/ http://cvs.sf.net/viewcvs.py/haskell-libs/libs/takusen/ Alistair. ----------------------------------------- ***************************************************************** Confidentiality Note: The information contained in this message, and any attachments, may contain confidential and/or privileged material. It is intended solely for the person(s) or entity to which it is addressed. Any review, retransmission, dissemination, or taking of any action in reliance upon this information by persons or entities other than the intended recipient(s) is prohibited. If you received this in error, please contact the sender and delete the material from any computer. *****************************************************************