Re: Database interfaces?

--- Daan Leijen wrote:

On Tue, 13 Jan 2004 19:01:41 -0800 (PST), Christopher Milton wrote:

...

What happened to the Haskell database interfaces project?

Hi Christopher,

I don't know exactly what the "Haskell database interfaces project" is, but here are some developments that you might want to know about:

Dominic Steinitz was leading an effort back in Jan/Feb 2003, but it seemed to fizzle out, or at least I never heard about it again.

1) Krasimir Angelov's HSQL toolkit provides (untyped) access to ODBC, MySQL and PostgresSQL databases. It doesn't return meta information yet. http://htoolkit.sourceforge.net/

2) wxHaskell has extensive ODBC support (but only tested on windows as yet). also untyped but with meta-information. http://wxhaskell.sourceforge.net/doc/Graphics.UI.WXCore.Db.html

3) Haskell/DB is being revived to provide typed access to databases. This is a student project at Chalmers. You can reach them at , and I think it was Anders H�ckersten who is doing it? Now that Haskell has functional dependencies, you can mimick just enough of TREX with nested cartesian products to use HaskellDB without TREX. I think they use HSQL for the low-level access :-( (that is meant funny:-)

Typed access, that's exactly it. I'll have to contact the folks at Chalmers. Thank you. Chris ===== Christopher Milton cmiltonperl@yahoo.com