I am generally impressed with the work being done at the cross roads of
relational databases and programming languages. The whole idea of
monad/list comprehensions is what motivated me to learn functional
programming.
Jan Hidders wrote:
> falcon wrote:
> > I have been trying to understand the TransRelational model myself. I
> > don't think simply having column based tables make the TR model.
> > Sybase IQ has column based table. KDB has column based tables (Dennis
> > Shasha calls them Arrables or array tables). MonetDB is not only based
> > on 'columns' but there is an actual open source implementation
> > (http://monetdb.cwi.nl).
>
> Developed by groups with a very good track record on query optimization
> and has a lot of peer-reviewed work supporting it. Highly advised,
> including the associated XQuery work.
>
> > The most interesting research I have seen is something called DODO.
> > There are some papers:
> > --The Dodo Query Flattening System
> > (http://www.ub.utwente.nl/webdocs/ctit/1/0000010d.pdf )
> > --A general approach to query flattening
> > (http://db.cs.utwente.nl/Publications/PaperStore/db-utwente-42D3A95D.pdf
> > )
>
> Agreed, although it's more about showing that a "flat relation"
> approach might work even if you data is essentially nested.
> Oversimplifying a bit you might say that the column-based approach is
> about showing that a "flat binary relation" approach might already be
> sufficient. :-)
>
> Note, btw. that the groups in Twente and Amsterdam are in close
> contact. That is not a concidence.
>
> -- Jan Hidders
Received on Wed Apr 12 2006 - 18:34:17 CDT
