问题
I wanted to transform tabular data into linked data. I was trying to use SPARQL construct to achieve this in GraphDB 9.5 Free edition. From the tutorials in GraphDb website it says "You can press the button SPARQL from the right top corner to access SPARQL end point". On the new version GraphDb 9.5 there is no SPARQL button after i loaded my tabular data. How do i access the SPARQL endpoint so that i can do my Construct queries?
回答1:
With GraphDB 9.4 we introduced an entirely revamped approach to converting tabular data from Refine to RDF. It includes a visual RDF mapping definition editor that allows you to describe the mapping in a very precise way and then either consume the generated RDF directly (e.g. download it) or generate a SPARQL CONSTRUCT query that produces the same RDF and tune it further to meet your needs. As such, the user interface has changed and using SPARQL is now done in a different way. Perhaps you were reading an older tutorial?
For more details on the new interface, please refer to the documentation: https://graphdb.ontotext.com/documentation/free/loading-data-using-ontorefine.html (in general) and more specifically https://graphdb.ontotext.com/documentation/free/loading-data-using-ontorefine.html#rdfize-data-using-sparql (if you need to do with SPARQL).
来源：https://stackoverflow.com/questions/65451788/where-is-the-sparql-button-in-ontorefine-tab-of-graphdb-9-5-free-edition