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Re: PROV-ISSUE-142 (Tlebo): Can roles only be Literals? [Data Model]

From: Luc Moreau <L.Moreau@ecs.soton.ac.uk>
Date: Mon, 7 Nov 2011 19:25:39 +0000
To: Jim McCusker <mccusj@rpi.edu>
CC: Paolo Missier <Paolo.Missier@ncl.ac.uk>, "public-prov-wg@w3.org" <public-prov-wg@w3.org>
Message-ID: <EMEW3|8e7a96995475c4f6018d08a5cbdfc8c3nA6JPh08L.Moreau|ecs.soton.ac.uk|466B7CD4-2154-48FC-957E-9E5F781C0BAB@ecs.soton.ac.uk>
It's a neat explanation, which I will incorporate. Thanks Jim.

Professor Luc Moreau
Electronics and Computer Science
University of Southampton 
Southampton SO17 1BJ
United Kingdom

On 7 Nov 2011, at 18:16, "Jim McCusker" <mccusj@rpi.edu> wrote:

> On Mon, Nov 7, 2011 at 12:42 PM, Paolo Missier <Paolo.Missier@ncl.ac.uk> wrote:
>> DM says:
>> 
>> 5.5.5 Literal
>> 
>> Literals represent data values such as particular string or integers.
>> 
>> My understanding is it's always been used in the standard grammar production
>> meaning (eg: http://savage.net.au/SQL/sql-2003-2.bnf.html#literal). Not so?
> 
> I think a clearer definition would be:
> 
> A Provenance Literal is a "leaf" value. It does not explicitly have
> any outgoing relations (in SW-ish: Is not a subject of any statement)
> in the PROV data model. Any outgoing relations from a Provenance
> Literal is out of scope for the PROV DM.
> 
> Jim
> -- 
> Jim McCusker
> Programmer Analyst
> Krauthammer Lab, Pathology Informatics
> Yale School of Medicine
> james.mccusker@yale.edu | (203) 785-6330
> http://krauthammerlab.med.yale.edu
> 
> PhD Student
> Tetherless World Constellation
> Rensselaer Polytechnic Institute
> mccusj@cs.rpi.edu
> http://tw.rpi.edu
> 
Received on Monday, 7 November 2011 19:26:37 UTC

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