Connecting to a Database

Step 1 – Establishing Connection: Port number Default: 27017  

conn = MongoClient(‘localhost’, port-number)

If using default port-number i.e. 27017. Alternate connection method: 

conn = MongoClient()

Step 2 – Create Database or Switch to Existing Database:  

db = conn.dabasename

Create a collection or Switch to an existing collection: 

collection = db.collection_name

Mongodb is a very popular cross-platform document-oriented, NoSQL(stands for “not only SQL”) database program, written in C++. It stores data in JSON format(as key-value pairs), which makes it easy to use. MongoDB can run over multiple servers, balancing the load to keep the system up and run in case of hardware failure.