Introduction: MongoDB is a document-oriented database, which is classified as a NoSQL database. In MongoDB, tables are called collections and records are called documents. It stores data in JSON format. The reading of data from MongoDB is fast when compared to the Relational Database. Installation: Install MongoDB Community Edition . Here we run MongoDB as a windows server for local development and for learning MongoDB. After successful installation, go to the location "C:\Program Files\MongoDB\Server\4.2\bin" then run "mongod.exe" which starts MongoDB server as windows server. Uses port "27017" as default to serve the requests. Run "mongo.exe" shell command, used as an interface to query the MongoDB. Query Commands: Database: Create a new database by running the command "use your_database_name" on the "mongo.exe" shell command. To see all the existing databases run the command "show dbs"