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do Property Graphs always assert annotated arcs?

From: Pierre-Antoine Champin <pierre-antoine.champin@univ-lyon1.fr>
Date: Thu, 29 Aug 2019 17:35:11 +0200
Message-ID: <CA+OuRR-6BQEGu3UK59K523cWsSS5Co3r3x=RU7H7O-x+=094MA@mail.gmail.com>
To: public-rdf-star@w3.org
Hi all,

here is a question for those on the list who have discussed more than I
have with Property Graph users.

There seem to be a consensus here that in PG, arcs with metadata are
asserted at the same time as they are annotated. This is reflected in the
PG interpretation of RDF*, where:

    <<:alice :spouse :bob>> :since 2001-02-03^^xsd:date .

asserts exactly two triples.

But as I understand, PG people are also likely to express things like:

    <<:alice :spouse :bob>> :since 2001-02-03^^xsd:date ;
        :until 2004-05-06^^xsd:date .

if Alice and Bob eventually got divorced.
In that situation, the arc <<:alice :spouse :bob>> should *no longer* be
considered asserted in the graph.

Question: is this scenario a plausible one in a PG context?
Received on Thursday, 29 August 2019 15:35:48 UTC

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