MongoDB

Posted on by wm-admin

It’s noSQL database for modern type of applications. Database is used by Facebook, Adobe, Google, Sega like bigger and well known companies.

mongoDB is storing data in JSON like format which is called BSON stands for Binary JSON. MongoDB is schema-free, allowing you to create documents without having to define the structure of the document.

This database is used for applications which are related to real-time analytics, content management, the internet of things and mobile applications.

Benefits of MongoDB

  1. No schema definition is required to create any collections
  2. Less risk of attacks due to no collection design/structure available
  3. If you have unstructured data then it’s best choice to use
  4. Much more faster then SQL database
  5. Many filters are available to fetch data different ways

Installation

You can install MongoDB on Ubuntu using below commands in terminal window

wget -qO - https://www.mongodb.org/static/pgp/server-4.2.asc | sudo apt-key add -
echo "deb [ arch=amd64 ] https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/4.2 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-4.2.list
sudo apt-get update
sudo apt-get install -y mongodb-org
echo "mongodb-org hold" | sudo dpkg --set-selections
echo "mongodb-org-server hold" | sudo dpkg --set-selections
echo "mongodb-org-shell hold" | sudo dpkg --set-selections
echo "mongodb-org-mongos hold" | sudo dpkg --set-selections
echo "mongodb-org-tools hold" | sudo dpkg --set-selections

Check MongoDB is installed properly by running below command in terminal

mongo

For Start MongoDB

sudo service mongod start

For Stop MongoDB

sudo service mongod stop

For Restart MongoDB

sudo service mongod restart

Install PHP driver for MongoDB

sudo apt-get install php-mongodb

Simple comparison with MySQL

Mongo DBMY SQL
CollectionTable
DocumentsRows
FieldColumn
Embedded documents, linkingJoins

You can You can see more about MongoDB on below URL

https://www.mongodb.com/docs/launch-manage/

Connect to MongoDB using PHP

$manager = new MongoDB\Driver\Manager("mongodb://localhost:27017"); //connection string

Bulk Insert to MongoDB

$bulk = new MongoDB\Driver\BulkWrite; //for insert bulk documents
$document1 = ['title' => 'one'];
$document2 = ['_id' => 'custom ID', 'title' => 'two'];
$document3 = ['_id' => new MongoDB\BSON\ObjectId, 'title' => 'three'];
$_id1 = $bulk->insert($document1); //create query for insert
$_id2 = $bulk->insert($document2);
$_id3 = $bulk->insert($document3);
$result = $manager->executeBulkWrite('local.testDb', $bulk); //execute insert query

In above local is a database name and testDb is a collection name

Select data from collection

Below query is for fetch records which record contains title=’two’

$query = new MongoDB\Driver\Query(array('title' => 'two')); // filter given in array format
$cursor = $manager->executeQuery('local.testDb', $query);

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