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[bioontology-support] download mappings in RDF

manuelso manuelso at
Wed Jul 24 09:11:31 PDT 2013

Hi Laura,

One option is to use SPARQL  to traverse all mappings between two given ontologies. It is better  to use pagination (OFFSET and LIMIT) to not hit time outs. If you try to get all mappings in one query the server will cut the response, it is just too expensive to do it in just one request given the amount of processing that it involves.

There are examples here:


On Jul 24, 2013, at 4:44 AM, "Hollink, L." <l.hollink at> wrote:

> Dear all, 
> I'm looking for a way to download a local copy of all mappings from/to a certain ontology in RDF. I can download the RDF mappings from the website, but that only gives me the first 10.000 mappings. I know I can download all mappings through the rest API, but that gives me XML instead of RDF.
> Is there a way for me to get all mappings in RDF? I'm looking for the mappings involving NCIt, SNOMED, MedDRA, ICD-10, LOINC and MeSH.
> Thanks,
> Laura
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> bioontology-support mailing list
> bioontology-support at

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