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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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RDF4J only scheduling 5 Queries against a Triple Store

I have some more Issues with handling semantic data technologies: I have a GraphDB Triplestor running locally on my machine an try to schedule some SPARQL queries against it using RDF4J and Java. As you can see from the code below 10 Queries shall…
Patrick Daßler
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How to create a custom AnalyzerFactory in GraphDB full text search?

(Using GraphDB 8.1 free). http://graphdb.ontotext.com/documentation/free/full-text-search.html says that I can enable a custom AnalyzerFactory for GraphDB full-text search, using the luc:analyzer param, by implemeting the interface…
ThomasFrancart
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RDFising data with SPARQL and SPIN

I want to RDFising data, I need construct with a SPARQL query (I'm using SPIN) an object (Book) with two properties (Title and Author). All books have "Title" but sometime haven't "Author". When this happens, it doesn't create this "Book", and I…
Wences
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Is neo4j good for storing general nosql data?

I am working on a project which has a complex user management layer with multiple user group levels, team and user heirarchies. So I was thinking about using neo4j. But there is other kind of data also which need to be stored. I'm skeptical about…
Shivaprasad Bhat
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GraphDB: Importing SnoMed CT to GraphDB

I would like to load SNoMed CT data onto GraphDB. Can anyone guide to import the data to GraphDB? I have installed GraphDB workbench so far.
John D
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-Denable-debug-rules=true not giving out statistics

I'm giving the flag -Denable-debug-rules, which the documentation says should print something to a log at least every 5 minutes, according to http://graphdb.ontotext.com/documentation/standard/rules-optimisations.html Unfortunately it's not, and I…
alanr
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drop repository fails on file error

Context: GraphDB 7.1.0 Using the openrdf-console, when requesting to drop a repository: drop myrepo . I get an error/exception: [ERROR] 2016-09-13 09:44:32,369 [repositories/myrepo | o.o.h.s.ProtocolExceptionResolver] Error while handling request…
loic.jaouen
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dbpedia graphDB semantic DB

I recently installed graphDB to store my ontology. I want to get access to dbpedia to get information using graphDB with SPARQL query. For example: SELECT distinct ?airport ?label ?RR WHERE { dbpedia:London geo-pos:lat ?latBase ; …
sirine
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How the Triples for OWL Symmetric or Inverse object property is populated?

Whether the Graph DB dataload engine creates additional Triples for the inserted Triples which have OWL Symmetric or Inverse object property in the RDFS model? Let’s assume the model and individuals given below, RDFS model: I have the classes Male…
Mara
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Memory issues with GraphDB 7.0

I am trying to load a dataset to GraphDB 7.0. I wrote a Python script to transform and load the data on Sublime Text 3. The program suddenly stopped working and closed, the computer threatened to restart but didn't, and I lost several hours worth of…
kurious
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Insert a Sparql Query Into Ontotext GraphDB

I am using Ontotext GraphDB to store semantic data. GraphDB allows to store/save sparql queries which are exposed as web services. However I want to store/save sparql queries through HTTP POST request. Below is my query and name of the query will be…
Nikunj Vekariya
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Importing from RDBMS to OrientDB: load edges only

using Community Edition 2.1.11 I saw some similar questions on the Internet (ex., import edges to OrientDB using etl or orient-database.narkive.com/d8c4b82y/orientdb-etl-edge-creation-help), but they are not really resolved yet. I'm implementing the…
grreeenn
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Single value in where clause

Hi I have a SPARQL query that has has this in the where clause ... optional { ?v foo:thing ?something . $dontgetthis ?v bar:somethingelse ?otherthing . ... } ... Now, I get most of this, except one thing. I don't get…
Sachin Kainth
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Import text documents to graph database through RDF triples

I have a list of documents (summary text and full document link). I am using OpenIE on the summary text to get RDF triples. How can I import the RDF triples and associated full document links in GraphDB for querying using SparkQL?
S_S
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Making an instance of GraphDB on Docker

I am trying to make an instance of GraphDB on Docker. After creating the instance, I need to make a repository to import the data to the instance. However, when I make a repository, it says that the repository does not exist. When I use the loadrdf…
shkhb
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