Data in the world started to grow tremendously after mobile application came in the market. This huge amount of data became almost impossible to handle with traditional relational database - SQL. NoSQL databases are introduced to handle those data where much more flexibility came like variable number of columns for each data.
MongoDB is one of the leading NoSQL databases. Each collection contains a number of JSON documents. Any data model that can be expressed in a JSON document can be easily stored in MongoDB.
MongoDB is a server-client database. Server usually runs with the binary file mongod and client runs with mongo.
To run an instance in production environment, it’s strongly advised to follow the Operations Checklist.