Download MongoDb from https://www.mongodb.com/download-center?jmp=nav#community Goto C:\Program Files\MongoDB\Server\3.4\bin (or equivalent folder) and
mongod --dbpath C:\Codes\Hack\Hack_SendOut\data
Goto C:\Program Files\MongoDB\Server\3.4\bin (or equivalent folder) and
mongo
use NAME_OF_DB_FILE
In the app.js file
mongoose.connect('mongodb://localhost/NAME_OF_DB_FILE')