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Re: PROV-ISSUE-239 (TLebo): is wasGeneratedBy(e) meaningful? [prov-dm]

From: Khalid Belhajjame <Khalid.Belhajjame@cs.man.ac.uk>
Date: Tue, 07 Feb 2012 17:07:07 +0000
Message-ID: <4F315A3B.6090109@cs.man.ac.uk>
To: Paolo Missier <Paolo.Missier@ncl.ac.uk>
CC: public-prov-wg@w3.org

I notice that activity id is mandatory for used, whereas it is optional 
for wasGeneratedBy.
I think we should be consistent between the two option, i.e., having 
activity id as optional or mandatory for the two relations.

If, however, we end up specifying activity id as optional, then we 
should probably change the name of the relation wasGeneratedBy -> generated


On 06/02/2012 22:57, Paolo Missier wrote:
> The activity should not be optional, surely?
> -Paolo
> On 2/6/12 9:19 PM, Provenance Working Group Issue Tracker wrote:
>> PROV-ISSUE-239 (TLebo): is wasGeneratedBy(e) meaningful? [prov-dm]
>> http://www.w3.org/2011/prov/track/issues/239
>> Raised by: Timothy Lebo
>> On product: prov-dm
>> Everything but entity is OPTIONAL in wasGeneratedBy.
>> If I say only wasGeneratedBy(e), what did I say? And why was I 
>> allowed to say it?
>> from WD3:
>> A generation record, written wasGeneratedBy(id,e,a,t,attrs) in 
>> PROV-ASN, has the following components:
>>      id: an optional identifier id identifying the generation record;
>>      entity: an identifier e identifying an entity record that 
>> represents the entity that is created;
>>      activity: an optional identifier a identifying an activity 
>> record that represents the activity that creates the entity;
Received on Tuesday, 7 February 2012 17:09:29 GMT

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