Re: Default Mapping vs Direct Mapping

  I vote for Default mapping.  I think 'default' better conveys the sense that it is a single algorithm.
All the best, Ashok

On 10/24/2010 4:28 PM, Juan Sequeda wrote:
> Hi Everybody
>
> I've seen the use of Default Mapping and Direct Mapping in several places. Soeren also pointed this out in his comments. So, what do these terms mean? Or are they the same?
>
> We need to come to a consensus asap!
>
> IMO, a Direct Mapping is a mapping from a RDB to RDF where tuple pk are subjects, attributes of a table are predicates and the values are objects (or something like this... this will be clearly defined in the direct mapping document). A RDB2RDF system should use the direct mapping as the default mapping, meaning, when the user does not customize a mapping and lets the RDB2RDF system expose the RDB data automatically as RDF, it will do it by the direct mapping.
>
> I'm guessing that R2RML document needs to reference the Direct Mapping document. Can a FPWD reference a document that is not ready? I do not feel comfortable about this.
>
> Juan Sequeda
> +1-575-SEQ-UEDA
> www.juansequeda.com <http://www.juansequeda.com>