text: var mongoose = require('mongoose');
  var dbUrl = 'mongodb://<Admin>:<test>@ds147497.mlab.com:47497/heroku_5hpwfw3p';
  //mongoose uses instance of mongoDb and dbUrl for establishing connection
  mongoose.connect(dbUrl);
  
  process.on('SIGINT', function(){
    mongoose.connection.close(function(){
      console.log('Mongoose has desconnected from mongoDb instance');
      process.exit(0);
    });
  });
  
  require('../models.album');
  require('../models.artist');
  require('../models.event');
  require('../models.song');
  