soarez

var mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/test');

var Schema = mongoose.Schema;

var PageSchema = Schema({
  title: { type: String, default: '', trim: true },
  url:   { type: String, default: '', trim: true },
  thumbnails: {type: Schema.ObjectId,  ref: 'Thumbnail'},
});

soarez

//Question:
  // Environment: NodeJS

// Lets suppose that you have a collection of items, and your function must persist all items using the
 //database.insert(item, callback ) function. When you finish the task, you should call the callback function. 
// If one item raise a error, the callback(err) must be called and never call the callback anymore.


function noop() {}