ISSUE-79: what is the contract associated with provenance-uris

provenance-uri-contract

what is the contract associated with provenance-uris

State:

CLOSED

Product:

Accessing and Querying Provenance

Raised by:

Luc Moreau

Opened on:

2011-08-23

Description:

The PAQ document indicates that provenance information (sometimes referred to as provenance resource) may change over time. What's the implication for the provenance-uri? Is the provenance-uri a cool URI? I think it is not, but this should be made explicit. There are also further issues.

Generally, what is the "contract" associated with this provenance-URI? How long should the server be able to serve this URI? It's particularly important for dynamically generated pages.

Let us consider a provenance store, in which provenance assertions gets accumulated. Let us consider a static resource, r, but over time, what we know about r changes, so it may have different provenance information p1 and p2.

If r is accessed, and a provenance-uri is returned, and dereferenced a first time, we obtain p1.

If r is accessed again, are we expecting to get the same provenance-uri, or a different one if provenance has changed?

Now, let us consider r as a dynamic resource. If r changes between the first and second access, is the same provenance-uri supposed to be returned?
If it does not change, how do we ever have a guarantee that the provenance information obtained corresponds to the resource representation we obtained?

Related Actions Items:

No related actions

Related emails:

1. addressing issues in prov-aq (from p.t.groth@vu.nl on 2012-04-05)
2. Plan for Prov-aq going forward (from p.t.groth@vu.nl on 2011-12-20)
3. Re: PROV-WG Reminder: Review PAQ before FPWD vote (from GK@ninebynine.org on 2011-11-16)
4. Re: PROV-WG Reminder: Review PAQ before FPWD vote (from L.Moreau@ecs.soton.ac.uk on 2011-11-15)
5. Re: PROV-WG Reminder: Review PAQ before FPWD vote (from p.t.groth@vu.nl on 2011-11-15)
6. Re: PROV-WG Reminder: Review PAQ before FPWD vote (from L.Moreau@ecs.soton.ac.uk on 2011-11-15)
7. Reviewing outstanding issues on PAQ document. (from GK@ninebynine.org on 2011-09-15)
8. Re: PROV-ISSUE-79 (provenance-uri-contract): what is the contract associated with provenance-uris [Accessing and Querying Provenance] (from GK@ninebynine.org on 2011-09-01)
9. Re: PROV-ISSUE-79 (provenance-uri-contract): what is the contract associated with provenance-uris [Accessing and Querying Provenance] (from L.Moreau@ecs.soton.ac.uk on 2011-08-26)
10. Re: PROV-ISSUE-79 (provenance-uri-contract): what is the contract associated with provenance-uris [Accessing and Querying Provenance] (from GK@ninebynine.org on 2011-08-26)
11. Re: PROV-ISSUE-79 (provenance-uri-contract): what is the contract associated with provenance-uris [Accessing and Querying Provenance] (from p.t.groth@vu.nl on 2011-08-25)
12. Re: PROV-ISSUE-79 (provenance-uri-contract): what is the contract associated with provenance-uris [Accessing and Querying Provenance] (from GK@ninebynine.org on 2011-08-25)
13. PROV-ISSUE-79 (provenance-uri-contract): what is the contract associated with provenance-uris [Accessing and Querying Provenance] (from sysbot+tracker@w3.org on 2011-08-23)

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