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Re: RDF constraint language (was Re: An alternative RDF)

From: Pat Hayes <phayes@ihmc.us>
Date: Thu, 10 Jul 2014 20:35:09 -0500
Cc: Juan Sequeda <juanfederico@gmail.com>, Phil Archer <phila@w3.org>, SW-forum Web <semantic-web@w3.org>, Eric Prud'hommeaux <eric@w3.org>
Message-Id: <530B2E14-595E-48E4-9E02-4E2421188F7D@ihmc.us>
To: Victor Porton <porton@narod.ru>

On Jul 10, 2014, at 2:07 PM, Victor Porton <porton@narod.ru> wrote:

> 10.07.2014, 21:35, "Juan Sequeda" <juanfederico@gmail.com>:
>> I assume this work is relevant to this topic:
>>  
>> http://www2.informatik.uni-freiburg.de/~mschmidt/docs/cold13_rdd.pdf
>> http://dcc.uchile.cl/~jperez/amw2014/paper_6.pdf
>  
> Not quite relevant for my problem.
>  
> The articles at the URLs above are about how to describe validation of RDF datasets.
>  
> My issue is different: It is how to avoid invalid data on loading a new RDF file from the Web, or else what to do if the data is invalid.

What you are asking for here is rather like asking about human conversation, how to make sure that people do not lie when they speak to you, or else if they do, what to do about it. And there is no way to ensure this, because people are free to say things that are false, or that other people disagree with. Similarly with RDF. This is really a consequence of the fact that the Web is open, and nothing particularly to do with RDF as such. As to what to do about it, that is up to you (or maybe to your code). 

Pat Hayes
 

>  
>> Juan Sequeda
>> +1-575-SEQ-UEDA
>> www.juansequeda.com
>> 
>> 
>> On Thu, Jul 10, 2014 at 6:00 AM, Phil Archer <phila@w3.org> wrote:
>> Just to jump in on this...
>> 
>> On 10/07/2014 03:58, Juan Sequeda wrote:
>> [..]
>> 
>> Are you looking for something like Integrity Constraints ala relational
>> world? If so, then RDF as-is is not the tool for you. I know that there are
>> some extensions that do support integrity constraints in RDF:
>> http://docs.stardog.com/icv/--
>> 
>> We (W3C) are close to seeking member approval for a new WG that will define a standard for just such a constraint language. Nothing definite yet but hopes are high that the draft charter at
>> http://www.w3.org/2014/rds/charter will be taken up. That document links to some member submissions that are helping to drive the conversation.
>> 
>> The doc also includes a link to the mailing list where it's being discussed.
>> 
>> Cheers
>> 
>> Phil.
>> 
>> -- 
>> 
>> 
>> Phil Archer
>> W3C Data Activity Lead
>> http://www.w3.org/2013/data/
>> 
>> http://philarcher.org
>> +44 (0)7887 767755
>> @philarcher1
>  
>  
> --
> Victor Porton - http://portonvictor.org

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Received on Friday, 11 July 2014 01:35:48 UTC

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