从S3复制数据到海王星实例| 需要使用SPARQL查看我的数据

Question

I have copied data from S3 to AWS Neptune instance (4 CSV files).

As per the AWS document, created RDF4 console to connect to Neptune instance.

In this console as per document created Neptune repository also.

Now I want see may data, how we can write the query now.

https://docs.aws.amazon.com/neptune/latest/userguide/access-graph-sparql-rdf4j-console.html

I have opened Neptune repository in my RDF4J console now.

How to execute the SPARQL queries to check my data?

Answer 1

CSV is supported only for property graph (Gremlin) data [1]. Neptune does not let you insert Gremlin data and query over SPARQL, if that's what you're trying to do.

Once you bul load data using one of the supported SPARQL dta formats listed above, you can try querying in various ways (CURL requests, HTTP requests programmatically using something libraries like rdf4j, Use GUI tools like RDF4J workbench etc.).

The easiest way to try basic requests would be using CURL, as follows:

curl -X POST --data-binary 'query=select ?s ?p ?o where {?s ?p ?o} limit 10' http://your-neptune-endpoint:8182/sparql
curl -X POST --data-binary 'update=INSERT DATA { <http://test.com/s> <http://test.com/p> <http://test.com/o> . }' http://your-neptune-endpoint:8182/sparql

More Info:

[1] https://docs.aws.amazon.com/neptune/latest/userguide/bulk-load-tutorial-format.html

[2] https://docs.aws.amazon.com/neptune/latest/userguide/access-graph-sparql-http-rest.html

[3] https://docs.aws.amazon.com/neptune/latest/userguide/access-graph-sparql-java.html

[4] https://docs.aws.amazon.com/neptune/latest/userguide/access-graph-sparql-rdf4j-workbench.html