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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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Can I constrain the owl:onProperties when traversing over owl:Restrictions?

I'd like to use ChEBI to determine which molecular entities could be considered "taxanes", in the informal language that physicians use. The Anatomical and Therapeutic Classification places both docetaxel and paclitaxel in class L01CD "Taxanes", but…
Mark Miller
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Aggregate Function AVG in GraphDB

For my project in GraphDB 9.4.1 I created a repository with owl rl (optimized). In my data I need to query the average value of a data property. When I follow the steps according to SPARQL instruction, the result is empty. I used the following…
PhilippGr
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Is there a possibility to batch a select-query with SPARQL and RDF4J?

I am working with a quite large dataset (around 500Mio-Triples) stored in graphDB Free and running on my local developer machine. I want to do some operations with the dataset with RDF4J and have to SELECT more or less the whole dataset. To do a…
onew4y
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imported .owl files have #'s in prefixes vs original rdf4j triplestore

When I import the dump "PathwayCommons12.All.BIOPAX.owl.gz" (linked from this page) of this Virtuoso triplestore, I've noticed that there are "#"s inserted after the prefix of various URIs. In particular, the following query runs on the original…
mkk
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SPARQL query for merging RDF Data Cubes

I'm engaging in a project that stores 2 RDF Data Cubes: Climate Data Cube : humidity-dataset, rainfall-dataset, temperature-dataset Industry Data Cube : industry-dataset Both data cubes are stored on GraphDB Database as named graphs. Each dataset…
Rio Vo
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RDFS-Plus Reasoning for rdfs:domain and range in GraphDB

Consider two GraphDB repositories with different reasoning rulesets: Repo A with ruleset "RDFS (Optimized)" Repo B with ruleset "RDFS-Plus (Optimized)" I executed the following SPARQL INSERT in both these repositories: PREFIX rdfs:…
Aljosha Koecher
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GraphDB - Inferred statements from new empty repository

I'm running some basic tests with GraphDB, and I am surprised to see that when a new repository is created, some statements seems to already be there (inferred by GraphDB). Here is the summary of the repository that tells about those…
Erick Hupin
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increase displayed link limit in graphdb workbench?

In the GraphDB Workbench web interface under "Visual Graph" "Settings", there is an option to change the maximum number of edges to show in the graph that maxes out at 1000. Is it possible to change (increase) that limit somewhere in a config…
data.curious
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is it possible to display literals in graphdb workbench visual graph?

I'm using GraphDB 9.4 free edition with the Workbench web interface on Ubuntu 18.04. I have a construct sparql query that shows all the correct triples, including literals, in the output below the query box. When I click on the "Visual" button to…
data.curious
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trying to display sparql query in a table

So me and my friends are trying to display data from a sparql query from graphDB. If we run this query in graphDB we get all the needed data displayed. However, we are trying to run it in an HTML file linked with a Javascript file. If we run this…
Captain Somma
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is it possible to 'clone' all repositories on a running GraphDB instance to a new server?

tldr: can I just copy the parent directory with all my repositories to the new machine? I have a GraphDB (free) server with 8 repositories that I need to move to new hardware. Is there documentation on this?
mkk
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GraphDB custom ruleset for inference over RDF* statements

I am trying to add a simple rule to the builtin RDFSPlus (Optimized) ruleset to be able to have GraphDB generate inferred (implicit) statements from RDF* assertions. Specifically, referring to GraphDB example here…
fventuri-work
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graphDB User/PW proxy settings lead to statuscode 407

I'm trying to run following SPARQL-query on my local graphDB-Instance (GraphDB Free 9.4.1 on Windows). PREFIX wd: PREFIX wdt: PREFIX rdfs:…
onew4y
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GraphDB or RDF4J bug? BOUND() yields wrong value

There seems to be a problem with the BOUND() function either in Ontotext GraphDB or in RDF4J SPARQL evaluation. The latter is less likely as I cannot reproduce the bug with an in-memory SAIL. Versions: Graphdb Free 9.4.1 (and some earlier versions:…
fkleedorfer
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Get the timestamp of INSERT SPARQL Query in GraphDB

I am working on a realtime project using Ontotext GraphDB which requires, the SPARQL queries are inserting into GRAPHDB every seconds, which is working perfectly. I am able to achieve that using RESTful API webapp with Flask. Here, my question is…
Alwin C Alias
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