{ 
   "language"  : "javascript",
   "views" : {
      "ex04" : {
         "map" : "function(doc){
                    if (doc.sections){
               for (var it in doc.sections){
               emit(doc.sections[it].language, [doc.title,doc.sections[it]]);
                 }
              }
         }"
      }
  }
}