gistfile1.txt

var personSchema = new mongoose.Schema({
  name: String
});

var bandSchema = new mongoose.Schema({
  name: String,
  lead: { type: mongoose.Schema.Types.ObjectId, ref: 'person' }
});

var Person = mongoose.model('person', personSchema, 'people');
var Band = mongoose.model('band', bandSchema, 'bands');

var axl = new Person({ name: 'Axl Rose' });
var gnr = new Band({ name: "Guns N' Roses", lead: axl._id });
// Save Person and Band