code: @Override
      public void loadRelationshipTypes() throws SQLException {
          PreparedStatement ps = getPreparedStatement(RELATIONSHIP_TYPE_SQL);
          for (RelationshipType r : RelationshipType.values()) {
              String relationshipName = r.getDisplayValue();
              ps.setInt(1, r.getValue());
              ps.setString(2, relationshipName);
              ps.addBatch();
          }
  
          ps.executeBatch();
      }
docs: {@inheritDoc}