anchor.diff:      mnesia:transaction(Fun).
   
   create_call() ->
  -    mnesia:create_table(call, [{attributes, record_info(fields, call)}]).
  +    mnesia:create_table(call, [{attributes, record_info(fields, call)},
  +    			       {ram_copies, [node()]}
  +    			      ]).
   
   insert_call(Callid, Type, Headers, Data) ->
       insert_record(#call{callid = Callid, type = Type, headers = Headers,
  
positive.code: 	  end,
      mnesia:transaction(Fun).
  
  list_calls() ->
      F = fun() ->
  		Q = query
  
negative.code: -module(database_call).
  -export([create_call/0, insert_call/4, get_call/1, list_calls/0,
  	 insert_call_unique/4, set_data/2, delete_call/2, get_call_type/2]).
  
  -include("database_call.hrl").
  
  