Mongo DB

MongoDB is an open-source document database and leading NoSQL database. MongoDB is written in C++. This tutorial will give you great understanding on MongoDB concepts needed to create and deploy a highly scalable and performance-oriented database.

Advantages of MongoDB

• Structure of a single object is clear.
• No complex joins.
• Tuning.
• MongoDB is easy to scale.
• Conversion/mapping of application objects to database objects not needed.
• Uses internal memory for storing the (windowed) working set, enabling faster access of data.

Disadvantages of MongoDB

• It does not support transaction
• No support for join operation
• It does not support function or stored procedure
• Consumes internal memory

Why Use MongoDB?

• Data is stored in the form of JSON style documents.
• Index on any attribute.
• Replication and high availability.
• Auto-sharding.
• Rich queries.
• Fast in-place updates.
• Professional support by MongoDB.

Where to Use MongoDB?

• Big Data
• Content Management and Delivery
• Mobile and Social Infrastructure
• User Data Management
• Data Hub

Where not to use MongoDB?

• Complex Transaction Intensive Systems
• Tightly Coupled Database Schema

Who uses MongoDB?

MongoDB is trusted by large enterprises running high-performance mission-critical enterprise applications. Below is a list of a few of them-
Adobe
LinkedIn
SAP 
McAfee
eBay
etc.

• Create Database :-  use Database_Name

• Drop Database :- db.dropDatabase()

• Create Collection :- db.createCollection()

• Drop Collection :- db.Collection_Name.drop()

• Insert Document :- db.Collection_Name.insert()

• Query Document :-   db.Collection_Name.find().pretty()

• Update Document :- db.Collection_Name.update() 

• Delete Document :-  db.Collection_Name.remove( )