Re: Reinventing the TransRelational Model?
Date: 12 Apr 2006 08:31:17 -0700
> 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
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
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