Import RDF

[MichelDiz]

Dgraph doesn’t support this RDF syntax. It has an “RDF-D” (Dgraph RDF). You have to do several changes to some exported RDF from third parties.

You will find some topics with details about the RDF syntax. Including some feature, improvement requests tickets. Just search for the “RDF” tag here.

@Anton

Can you advise on any tools and/or techniques for bulk converting of Owl to the Dgraph preferred format?

Owl in general has a complex syntax. You have to master DQL first to understand how to import it. It is possible to simulate it, but complex depending on the case.

@Anton

More focus on Semantic web support. There is a lot of work already done in regards to Owl, RDF, etc. Opening up so that these formats can more easily be imported will also likely expand adoption of Dgraph. For example, allowing the import of OWL.

I have a ticket open related to this.

@Anton

From other forum posts it seems that RATEL has a limitation on the size of the data that can be imported. Perhaps make this limitation (a) more obvious, (b) configuration and (c) avoidable by, say, providing a file upload feature, or URL import feature.

In the case of big imports, you have to use BulkLoader, liveloader, or some native client such as Dgo or Dgraph-js and so on. Ratel is used for little things, like view some queries and set up your schema.

@Anton

• More helpful error messages - The RDF error message was too lengthy and thereby not so easy to find anything helpful in it.

Basically, the error just says that the syntax is incompatible with the parser.