Mongo DB

 Mongo DB

• Mogo db is a document-oriented database program
• Mongodb easy to learn and use
• it's store data in flexible
• Mongodb is free to use

usage of Mongodb 

• Save big data
•  Content Management and delivery
• Mobile and Social infrastructure
• User Data Management

Features of Mongodb

• High availability through built-in replication and failover
• Horizontal scalability
• End-to-end security
• Native document validation
• Schema less
• Ease to scale-out
• No complex joins

Mongo db commands

sudo mongo:-To start the server

sudo mongod:- To start the client

use "database-name":- Create a database if any database has on this name this command select that data base.

show dbs:- Shows all database

Note:-Atleast 1 file must be inside the database to show the database  

db.createCollection"name":-To create a Collection

db."collectionname".drop():-To delete a Collection

db.dropDatabase():-Delete The database

db."collectionname".insert:-To insert the document to the collection

db."collectionname".remove:-Remove Collection

db."collectionname".find:-To show the document inside the Collection

$gt:-Greater than

$gte:-Greater than or Equal

$lt:-Less than

$lte:-Less than Equal

$eq:- Equal

$ne:-Not Equal