“MongoDB is designed to work with documents without any need of predefined columns or data types (unlike relational databases), making the data model extremely flexible.”
In this chapter, you will learn about the MongoDB data model. You will also learn what flexible schema (polymorphic schema) means and why it’s a significant contemplation of MongoDB data model.
4.1 The Data Model
In the previous chapter, you saw that MongoDB is a document-based database system where the documents ...