Using Mongoose, an open-source Node.js package, you can learn to incorporate schema, models, and validation into your applications. In this course, Fundamentals of Mongoose for Node and MongoDB, you will learn a solid foundation upon which you can continue to build and become proficient developing applications which use Mongoose to communicate with MongoDB. First, you will learn to build a Mongoose schema and a model from that schema. Next, you will discover the relationship between a Mongoose model and a document instance of that model and how to query for data using a variety of helper methods and query conditions. Finally, you will explore how to make sure that data sent to the database is valid using built-in and custom validators. When you're finished with this course, you will have the skills and knowledge of mongoose.js needed to start building your own Express API services to save data to and retrieve data from MongoDB through Mongoose.