anchor.diff: -%  @copyright 2007-2015 Zuse Institute Berlin
  +%  @copyright 2007-2017 Zuse Institute Berlin
   
   %   Licensed under the Apache License, Version 2.0 (the "License");
   %   you may not use this file except in compliance with the License.
  
positive.code:     ok.
  
  -spec start_mnesia() -> ok.
  
  start_mnesia() -> 
    case config:read(db_backend) of
      db_mnesia -> db_mnesia:start();
      _ -> ok
    end.
  
  %% @doc Checks whether config parameters exist and are valid.
  -spec check_config() -> boolean().
  check_config() ->
  
negative.code:                     end
              end,
              add_additional_nodes(),
              exit(Pid, kill),
              case util:is_unittest() of
                  true -> ok;
                  _    -> io:format("Scalaris started successfully."
  