Re: RDB2RDF mapping

Darya,

I was about to write an email with these exact comments. Ashok, beat me to
it. I have the same concerns.

Some other comments:

Q4: Which complicated queries? Used in an application outside the RDB2RDF
context? Or a complicated query used in the mapping. If it's the latter,
isn't the query already in the R2RML mapping file?

Q6: (reusing mappings) This is a common topic in the SW community. The
answer is "depends". In a commercial setting (at least in my experience),
users create their own target ontology and don't reuse. Should they reuse?
If they want to be 100% in control, then no.

You may also found of interest our following paper:

Relational Database to RDF Mapping Patterns
http://ceur-ws.org/Vol-929/paper9.pdf

Best,

Juan Sequeda
+1-575-SEQ-UEDA
www.juansequeda.com


On Fri, Dec 13, 2013 at 9:09 AM, Ashok Malhotra
<ashok.malhotra@oracle.com>wrote:

>  Hi Darya:
> I have a few comments on your questionnaire.
> The problem that I have with it is that the mapping depends
> on what you want to do with it.  For example, your first question is
> "Both ETL and on-demand data access must be implemented".  Well,
> that depends on how you want to use the data.
>
> The second question is "In case of automated mapping, the direct mapping
> requirements must be satisfied; in case of manual mapping, it must be
> represented in R2RML."  Well, yes, of course.
>
> The third question is "To improve the quality, explicitly related data
> from the database should be implicitly incorporated into the mapping."   I
> don't understand what this means.  What kind of explicit
> relationships, other than primaryKey-foreignKey are you thinking about.
>
> Are you trying to write a Best Practices in Mapping Relational Data to RDF?
> All the best, Ashok
>
>  On 12/13/2013 8:15 AM, Darya Tarasowa wrote:
>
>  Hi,
>
>  My name is Darya Tarasova and I'm a 3rd-year PhD student at University of
> Bonn.
>
> Currently I'm working on proposing the best practices in creating the
> RDB2RDF mappings and I need community feedback on my investigations.
>
> Could you please fill out the form, available on http://slidewiki.org/application/questionnaire.php
> . The questionnaire consists of about 15 questions and should not take
> more than 5-10 minutes of your time.
>
> Answering the questionnaire will help as a lot, as we do not have any
> other way to evaluate our work. You can choose either to stay incognito or
> to fill out your personal data to be personally thanked in the
> Acknowledgement section of the future paper.
>
> Please, share the link with anybody, who could help us!
>
>  Mit freundlichen Grüßen,
> Kind regards,
>
> Darya Tarasowa
>
> Phd student
>
> Enterprise Information Systems Department, University of Bonn,
>
> Fraunhofer IAIS <http://www.iais.fraunhofer.de/>
>
> --
>
>
>
>