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Re: How do you explore a SPARQL Endpoint?

From: Bernard Vatant <bernard.vatant@mondeca.com>
Date: Thu, 22 Jan 2015 15:27:24 +0100
Message-ID: <CAK4ZFVG9i+qO_Qf0t=04A=8A77rcU+AWcKprKpFLfpg4Wi4spA@mail.gmail.com>
To: Juan Sequeda <juanfederico@gmail.com>
Cc: Semantic Web <semantic-web@w3.org>, public-lod public <public-lod@w3.org>
Hi Juan

My strategy is as following

Q1 : Which types are used?
SELECT DISTINCT ?type
WHERE {?x rdf:type ?type}

Q2 : Which predicates are used?
SELECT DISTINCT ?p
WHERE {?x ?p ?o}

Q3 : Which predicates are used by instances of the type :foo found in Q1
I'm interested in
SELECT DISTINCT ?p
WHERE {?x ?p :foo}


2015-01-22 15:09 GMT+01:00 Juan Sequeda <juanfederico@gmail.com>:

> Assume you are given a URL for a SPARQL endpoint. You have no idea what
> data is being exposed.
>
> What do you do to explore that endpoint? What queries do you write?
>
> Juan Sequeda
> +1-575-SEQ-UEDA
> www.juansequeda.com
>



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*Bernard Vatant*
Vocabularies & Data Engineering
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Received on Thursday, 22 January 2015 14:28:15 UTC

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