@prefix rr: <http://www.w3.org/ns/r2rml#> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix ex: <http://example.com/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix rml: <http://semweb.mmlab.be/ns/rml#> .
@prefix ql: <http://semweb.mmlab.be/ns/ql#> .
@base <http://example.com/base/> .
@prefix d2rq: <http://www.wiwiss.fu-berlin.de/suhl/bizer/D2RQ/0.1#> .

<TriplesMap1> a rr:TriplesMap;
    
  rml:logicalSource [
    rml:source <#DB_source>;
    rr:sqlVersion rr:SQL2008;
    rml:query "SELECT ('Student' || ID) AS StudentId, ID, Name FROM student";
    rml:referenceFormulation ql:CSV
  ];

  rr:subjectMap [
      rml:reference "studentid"; rr:termType rr:BlankNode
    ];

    rr:predicateObjectMap [
      rr:predicate foaf:name ;
      rr:objectMap [ rml:reference "name" ]
    ].

<#DB_source> a d2rq:Database;
  d2rq:jdbcDSN "CONNECTIONDSN"; # the "jbdc:mysql:// part is ignored
  d2rq:jdbcDriver "org.postgresql.Driver"; # this is ignored
  d2rq:username "postgres";
  d2rq:password "" .