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Questions tagged [graphdb]

Ontotext GraphDB is a semantic triplestore: a database for RDF and OWL data. Use this tag for questions specifically about the Ontotext GraphDB product. For questions that are about graph databases in general (or about other graph database products), use the [graph-databases] tag instead.

In essence, GraphDB™ is a “semantic repository” using ontologies that allow the repository to automatically reason about the data. It works with a flexible and generic physical graph data model allowing for easy interpretation and adoption of new ontologies or metadata on-the-fly. GraphDB™ is packaged as a storage and inference layer (SAIL) for Sesame. Sesame is one of the most popular semantic repositories that supports RDF(S) and all the major syntaxes and query languages related to it. GraphDB is fully SPARQL 1.1 compliant. You can read more about GraphDB™ here. The full documentation can be found here.

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Is it possible to query inferred Einstein Riddle knowledge from OWLIM?

I have OWLIM repository populated with Einstein Riddle owl. Link1 - Link2. Is it possible to query inferred knowledge from OWLIM using sparql ? To get same results as on individual tab in Protege ? SPARQL: PREFIX riddle:…
Michal Joštiak
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SPARQL Namespace conflict while querying

I'm quite puzzled by the behavior of my endpoint, nor by the processing of the request. The basic RDFS namespace seems to clash with another definition while querying, resulting in an error when declaring the prefix and a normal output when omitting…
BathtubBear
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GraphDB rejecting the OGC GeoSparql SHACL

Question: Why is GraphDB rejecting the OGC GeoSparql SHACL constraints? Background GraphDB supports SHACL validation against incoming & existing data. OGC provides shapes for the GeoSparql standard and included passing & non-passing data in the…
Thomas
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Why are the spaces in the RDF syntax appearing as %20 (Ontotext Refine and GraphDB)?

I am a beginner to RDFs and I'm creating triples of the data with Ontotext Refine. I'm using the community edition of Ontotext GraphDB for viewing graphs. I created a RDF triple from the Fortune 500 dataset in the following When I click the 'Open…
josuk8
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Using backward chaining in graphDB

I have created an ontology and now I want to use backward chaining in graphDB. I'm pretty new to this and I actually have no clue on where to start. How do I perform backward chaining in graphDB? I have a little bit of experience with graphDB but no…
Captain Somma
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How can I make sparql queries to the active repository from a graphdb plugin in java/kotlin?

I'm developing a graphdb plugin using graphdb's Plugin API. I need my plugin to retrieve some statements from the current active graphdb repository to process them further. I want to make a query with this format: PREFIX rdf:…
Andrea Corradetti
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GraphDB load RDF4J custom SPARQL function in Docker image

I'm having trouble loading my RDF4J custom SPARQL function in GraphDB. I'm running GraphDB 10.2.0 using the Docker image at https://hub.docker.com/r/ontotext/graphdb. I've followed https://rdf4j.org/documentation/tutorials/custom-sparql-functions/…
Edmond Chuc
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How can I avoid that my delete/insert requests to the sparql-template endpoint duplicate data when fired in quick succession

I'm trying out GraphDB to see if it would fit my usecase or not and I have created a simple ontology in the form of (block) - has_content - (string). I have populated the database with a few triples matching this schema and created a React frontend…
yngwi
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Deleting a Triple in GraphDB only from the default graph

What I want: If you have 2 triples in GraphDB as: . . How can I delete only the one in the default graph with a DELETE DATA query? I am trying to do this in a query that may also be…
Feisty Dev
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Is there a JavaScript implementation of OGC GeoSPARQL functions?

I am aware of various Java implementations of OGC GeoSPARQL standard, provided by RDF4J, Jena, GraphDB and other vendors. Now I am looking for JavaScript libraries that implement whole set of GeoSPARQL functions, or some subset of them. I tried…
RedCrusaderJr
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GraphDB clear automatically duplicate triples?

I have a question about how graphDB work with multiples graphs in the same repository: If 2 different graphs has the same triples, the graphDB keep the 2 triples (duplicated) or clean?
Gisane Michelon
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Shortest weighted path in RDF?

we've been working with supply chain data, where two actors are connected via a Route. This Route node has information on distance, cost, etc, for transport of goods between the two actors. My question is, is there any method or algorithm, such as…
dfreytag
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Chrome crashes when trying to upload RDF files through the GraphDB dashboard

A few days ago Chrome unexpectedly started to crash whenever I go to GraphDB dashboard's Import > Upload RDF files. Chrome crashes altogether the moment I press the Upload RDF files button. GraphDB continues to be online and nothing is logged in its…
Stratos K
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Sparql - Graphdb : How to delete a single node and thoses relations only

I have got a simple problem for you : My use case is to delete a single node (red square below) and thoses relations stored into my triplestore (GraphDB) with a SPARQL query based on this graph : DELETE FROM declaration needs triples like ?s ?p…
A.Dumas
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java.lang.NoClassDefFoundError: Could not initialize class com.useekm.geosparql.UnitsOfMeasure

I have an application that executes Geosparql queries successfully on version 10.0.x but the same fail on 10.1.4 In order to pinpoint the issue I tried using the Geosparql examples at…
Johan Kumps
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