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Posted to users@jena.apache.org by Andrew U Frank <fr...@geoinfo.tuwien.ac.at> on 2018/02/18 19:16:16 UTC

Re: Transactions when using SPARQL update

I have read the discussion on transactions, especially the hint
"Transactions are whatever the dataset provides - for TDB that's 
multiple read-and-singlewriter (MR+SW) all at the same time. " (by andy 
ssaborne).

i use TDB but store data using the SPARQL update functions (INSERT DATA 
especially). is it correct that each such SPARQL http call is a 
transaction on the TDB database?

thank you for a very powerful tool!
andrew

Re: Transactions when using SPARQL update

Posted by Andy Seaborne <an...@apache.org>.


On 18/02/18 19:16, Andrew U Frank wrote:
> I have read the discussion on transactions, especially the hint
> "Transactions are whatever the dataset provides - for TDB that's 
> multiple read-and-singlewriter (MR+SW) all at the same time. " (by andy 
> ssaborne).
> 
> i use TDB but store data using the SPARQL update functions (INSERT DATA 
> especially). is it correct that each such SPARQL http call is a 
> transaction on the TDB database?

Yes

Every Fuseki request is a transaction - the request is to a TDB dataset, 
the TDB transaction mechanism is used.

     Andy

> 
> thank you for a very powerful tool!
> andrew