MongoDB is a cross-platform, open-source, NoSQL database, used by many modern Node-based web applications to persist data.
In this beginner-friendly tutorial, I’ll demonstrate how to install Mongo, then start using it to store and query data. I’ll also look at how to interact with a Mongo database from within a Node program, and also highlight some of the differences between Mongo and a traditional relational database (such as MySQL) along the way.
What Is MongoDB?
MongoDB is a document-oriented database. This means that it doesn’t use tables and rows to store its data, but instead collections of JSON-like documents. These documents support embedded fields, so related data can be stored within them.
MongoDB is also a schema-less database, so we don’t need to specify the number or type of columns before inserting our data.
Here’s an example of what a MongoDB document might look like:
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