text: const mongoose = require('mongoose');
  const Schema = mongoose.Schema;
  
  /**
  * Mongodb data schema for Dash content collection.
  */
  const QoeSchema = new Schema({
  	messageType: {type:String},
  	contentId: {type:String},
  	date: {type:Number},
  	eventType: {type: String},
  	selectedItemURL: {type: String},
  	deviceId: {type:String},
  	deviceType: {type:String},
  	sessionId: {type:String},
  	averageThroughput:{type: Number},
  	currentBufferLevel: {type:Number},
  	mediaTime: {type:Number},
  	quality: {type:Number},
  	startupDelay:{type:Number},
  	url: {type:String},
  	viewLat: {type:String},
  	viewLon: {type:String},
  	viewX: {type:String},
  	viewY: {type:String},
  	viewZ: {type:String}
  });
  
  module.exports = mongoose.model('Qoe', QoeSchema);