The main objectives of this article are: MongoDB MongoDB Atlas Cloud Service. MongoDB ConnectionString. MongoDB: 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 BSON format. The BSON is the binary serialization of JSON. The reading of data from MongoDB is faster when compared to the Relational Database. But MongoDB doesn't have relation between the collections. We can't declare NoSQL is better than SQL or vice-versa. So depending on the application requirement either select NoSQL or SQL or Both databases. MongoDB Atlas Cloud Service: For our demo to use MongoDB let's use the MongoDB Atlas Cloud Service. (Step 1) Let's go to the MongoDB Atlas website and then signup for 'Free'(Pricing Package). (Step 2) After registration creates a free cluster and next land on the dashboard page as below. (Step 3) Now to create a MongoDB collection(t