http://www4.wiwiss.fu-berlin.de/bizer/d2r-server/#quickstart delete  WorkflowElement_WorkflowElements,  WorkflowElement_Workflow; !WorkflowElement_PreviousSteps; WorkflowElement; create mapping $ generate-mapping -u root -p root -d com.mysql.jdbc.Driver -o molgenis_rdf_mapping_GCC.n3 jdbc:mysql://127.0.0.1/bbmri {{{ Warning Sorry, I don't know which columns to put into the uriPattern for "biobank_new" because the table doesn't have a primary key. Please specify it manually.   }}} Server run without problem : $ d2r-server -p 8070 molgenis_rdf_mapping_GCC.n3