Re: Nested Sets vs. Nested Intervals
From: <amado.alves_at_netcabo.pt>
Date: 10 Nov 2005 03:57:07 -0800
Message-ID: <1131623827.779709.101250_at_z14g2000cwz.googlegroups.com>
Date: 10 Nov 2005 03:57:07 -0800
Message-ID: <1131623827.779709.101250_at_z14g2000cwz.googlegroups.com>
<<In order to be more specific, would you please elaborate on the RDF
algebra.
like, give a definition of the algebra ?>>
An RDF algebra is given in "RAL: an Algebra for Querying RDF" by Fransicar et al. There are others. I remember seing very nice discussions in the proceedings of the WWW conference some years ago.
Please note that I do not particulary favour RDF. I am interested in more general languages, ideally one capable of solving the wild disparity of Semantic Web languages found today. Maybe a bit like what Codd did in the 1970's w.r.t. the disparity of database models. Received on Thu Nov 10 2005 - 12:57:07 CET