MongoDB

MongoDB installation and Mangosh PowerShell

Overview

• Stores data in the format of json, key-value pairs.
• Fast retrieval of data.

Download and setups

• Download the MongoDB compass from here.
• Download the MongoDB shell from here.
  • Set the bin location in the system variable path.

Create database and collections in mongosh

• Open the command prompt and run

mongosh

• To_Create_database

use database_name

• create_collections_and_add_one_record

db.collection_name.insertOne({"First name":"Dhamu", "last name": "R"})

• Create_collections_and_add_multiple_records

db.collection_name.insertMany([{"first name" : "Krish1", "last name":"Naik1"},{"first name":"Krish2","last name":"Naik2"}])

• Query_all_data

db.collection_name.find()

• Fetch_particular_data

db.collection_name.find({"first name":"Krish"})

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MongoDB with python

• To install the python library run the below script in the cmd prompt

   pip install pymongo

• Refer the script for
  • establishing connection
  • create database
  • insert single data
  • insert multiple data
• Refer this script for
  • Querying data
  • Nested documents
• Refer the script for the following functions
  • update_one()
  • update_many()
  • replace_one()
• Refer the script for
  • sum
  • average
  • multiply
  • project