Learn MongoDB 4.x

Working with Complex Documents Across Collections

This chapter starts with a brief overview of the scenario used for the remaining chapters of the book. After a brief discussion on how to handle monetary data, the focus of this chapter switches to working with multiple collections. Developers who are used to formulating SQL JOIN statements that connect multiple tables are shown how to do the equivalent in MongoDB. You'll also learn how to process programming operations that require multiple updates across collections. The technique can be tricky, and this chapter outlines some of the potential pitfalls novices to MongoDB might experience. Lastly, GridFS technology is introduced as a way of handling large files and storing documents directly ...