MongoDB is famous NoSQL database. NoSQL database stores data in JSON format in text file or similar. These are very famous now a days and used widely because reading data from a NoSQL database is much much faster than a RDBMS like SQL Server, MySQL or other.
C:\Program Files\MongoDB\Server\3.0\bin. Here you will see a bunch of executables.
mongod.exe- runs the actual mongo DB. ( this is the actual server)
mongo.exe- used to connect with the database of mongo db and perform add edit update delete operations.
mongod.exefrom the command line (first, it will ask for a folder C:\data\db to store mongo database data. So create those folders.)
mongo.exefrom the command line and create database or perform some other operations.
mongod.exeis showing some logs. It's all done with the setup now.