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RE: tips for estimating the size of an sql database in rdf

From: Hans Teijgeler <hans.teijgeler@quicknet.nl>
Date: Tue, 10 Jan 2006 14:50:28 +0100
To: "'Henry Story'" <henry.story@bblfish.net>, "'Semantic Web'" <semantic-web@w3.org>
Message-ID: <000501c615ec$d4a3fd60$6c7ba8c0@hans>

Henry,

That depends on the question whether you want to make the implicit
information in that SQL database explicit (in implicit representation lots
of linking information is left out, because "you know what it means", and
therefore requires human intervention). In that case it is anyone's guess,
because the degree of implicitness varies enormously.

Regards,
Hans

-----Original Message-----
From: semantic-web-request@w3.org [mailto:semantic-web-request@w3.org] On
Behalf Of Henry Story
Sent: Tuesday, January 10, 2006 12:17
To: Semantic Web
Subject: tips for estimating the size of an sql database in rdf



Hi,

I am interested if anyone has good tips to help estimate how large a  
plain old legacy sql database is going to be in triples for a  
particular ontology. I can probably make them up, but who knows,  
perhaps someone has already written a calculator for this. This would  
be very useful in estimating what projects should would be initial  
candidates for putting online behind a SPARQL interface, given that  
current specialised triple databases can take between 20 million and  
300 million triples. [1]

Henry Story

[1] http://esw.w3.org/topic/LargeTripleStores
Received on Tuesday, 10 January 2006 13:50:56 GMT

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