text: var mongoose = require('mongoose')
    , Schema = mongoose.Schema;
  
  var Frequencies = mongoose.model('Frequencies', new Schema({
      agency_key        :  { type: String, index: true }
    , trip_id           :  { type: String }
    , start_time        :  { type: String }
    , end_time          :  { type: String }
    , headway_secs      :  { type: String }
    , exact_times       :  { type: String }
  }, { strict: true }));
  