MongoDB is a powerful, document-oriented database that stores data in flexible, JSON-like documents. In essence, it means you can store your data in a more intuitive way, closely aligned with how your application's logic is designed. Unlike traditional relational databases, MongoDB does not require a predefined schema before you add data to a database. You can create documents without having to first create the structure for that document, which can include fields and complex nested documents.

MongoDB Basics

At its core, MongoDB operates on a set of principles that deviate from traditional SQL databases:

• Documents: In MongoDB, the basic unit of storage is a document. These documents are stored in collections and can contain many different key-value pairs, or key-array pairs, or even nested documents.