Everything About Mongodb

Everything about MongoDB

Everything about MongoDB

The wave of the non-relational Database, often known as “NoSQL,” has drawn noticeable and growing interest as data volumes increase globally.

Businesses and organizations are looking for innovative ways to handle the data deluge and are drawn to alternative database management tools and systems that are distinct from conventional relational database systems.

MongoDB enters the scene at this point. Enroll at Softlogic Systems for the Best MongoDB Course in Chennai with IBM Certification.

What is MongoDB?

By description, MongoDB is an open-source database that employs a non-structural query language and a document-oriented data format.

It is now one of the most potent NoSQL systems and databases available. Widely reachable A cloud-based database for contemporary applications is MongoDB Atlas.

Fully managed MongoDB can be deployed across AWS, Google Cloud, and Azure thanks to best-in-class automation and proven methodologies.

Additionally, it guarantees scalability, availability, and adherence to the strictest standards for data security and privacy.

The integrated data platform known as MongoDB Cloud includes features including the global cloud database, search, data lake, mobile, and application.

It does not employ the typical rows and columns that you would often associate with relational database management because it is a NoSQL solution. It is a structure that is based on papers and collections.

An assortment of key-value pairs makes up the fundamental data type in this database.

It permits alternative fields and structures for papers. This database employs the binary-style JSON document format known as BSON for document storage.

The very elastic data model that MongoDB uses enables you to mix and store data of various forms without sacrificing the robust indexing, data access, and validation criteria.

When you wish to dynamically change the schemas, there is no downtime. It entails that you may focus more on making your data more effective rather than having to spend extra time getting the data ready for the database.

Check out the example of a document database in MongoDB

{_id:name: “Vinay”,

Age: 32,

Address: {{street: “2/7, Gandhi Nagar”,

city: “Chennai”,

state: “Tamilnadu”,

zip: “600024”,

country: “INDIA”}}


History of MongoDB

Dwight Merriman, Eliot Horowitz, and Kevin Ryan invented MongoDB in 2007.

They made the decision to create a database to address the scalability and agility issues that DoubleClick was experiencing. “MongoDB” was founded at that time.

  • The original version of MongoDB was created by 10gen Software in 2007 as a component of a suggested platform as a service solution.
  • In 2009, the company shifted to an open-source development methodology, with paid support and additional services offered.
  • 2013 saw the change of the company’s name from 10gen to MongoDB Inc.
  • On October 20, 2017, it was listed on NASDAQ as MDB with an initial public offering price of $24 per share, making it a publicly traded company.
  • On October 30, 2019, it made an announcement about a collaboration with Alibaba Cloud to provide customers with a MongoDB-as-a-Service solution. Customers can access managed services from any of BABA’s data centers around the world.
The Architecture of MongoDB NoSQL Database

The Architecture Of Mongodb Nosql Database

Database: It may be thought of as the data’s physical container, to put it simply. With several databases running on a single MongoDB server, each database has its own set of files on the file system.

Collection: A collection is a set of database documents. A table is an RDBMS counterpart of a collection.

One database contains the full collection. Regarding collections, there are no schemas.

Although different documents contained inside a collection may have different fields, most papers in a collection are intended to serve the same function or to achieve the same end result.

Document: A group of key-value pairs can be referred to as a document. Dynamic schemas are linked to documents.

A document in a single collection does not need to have the same structure or fields, which is an advantage of dynamic schemas.

A collection document’s common fields can also include a variety of data kinds.

MongoDB’s Key Features
  • It supports both document-based and ad hoc queries.
  • Support for Indexes: The document’s fields can all be indexed.
  • Replication: Master-Slave replication is supported. MongoDB maintains several copies of the data using native apps. One benefit of the replica set is that it contains a self-healing shard, which prevents database outages.
  • Several Servers: The database may be used on several servers. To protect the system against hardware failure, data is replicated.
  • Auto-sharding: Data is distributed over several physical partitions, or shards, using the auto-sharding method. MongoDB offers an automated load-balancing function because of sharding.
  • MapReduce: It provides versatile aggregating tools like MapReduce.
  • Failure handling: MongoDB makes it simple to deal with failures. Increased security and data availability against database outages caused by network partitions, rack failures, multiple machine failures, and data center failures are provided by large numbers of replicas.
  • GridFS: Any file size may be stored without adding complexity to your stack. By breaking up files into smaller pieces, the GridFS feature saves each piece as a distinct document.
  • Schema-less Database: It is a C++-written, schema-less database.
  • Document-oriented Storage: It makes use of the JSON-like BSON format.
  • Procedures: MongoDB Given that the database uses JavaScript rather than procedures, it performs well.

Why is MongoDB technology necessary?

Scalability, one of the greatest drawbacks of conventional database systems, was overcome by this technique.

Database systems are required to be updated to keep up with the constantly changing demands of organizations.

MongoDB is extremely scalable. It enables continuous and automated integration and makes it simple to retrieve data.

In addition to these advantages, there are several other reasons why MongoDB is necessary:

  • There is no downtime when the application is scaling.
  • Carries out in-memory processing
  • Processing of graphs and text
  • Economic
  • Global replication

Additionally, companies are learning more and more that MongoDB checks all the necessary boxes for fulfilling their needs. As follows:

  • MongoDB offers the ideal fusion of data and technology for a competitive edge.
  • Since it significantly lowers hazards, it is best suited for applications that are mission-critical.
  • The time to value (TTV) was hastened and the total cost of ownership was decreased.
  • It creates applications that conventional relational databases just cannot.

Data Types of MongoDB

Numerous different datatypes are supported by MongoDB, including:

Data Types of MongoDB
Data TypeDescription
StringTo store valid UTF-8
IntegerTo store numerical values (32-bit or 64-bit)
BooleanTo store true/false values
DoubleTo store floating point values
Min/Max KeysTo compare the lowest or highest BSON elements
ArraysTo store arrays, lists, or multiple values in UNIX format
TimestampTo keep a record of the modifications or additions to a document
ObjectTo embed documents
Object IDTo store the ID of a document
Binary dataTo store binary data
NullTo store null values
SymbolTo store symbol types of elements
CodeTo store JavaScript code in the document
Regular ExpressionTo store regular expressions

Advantages of MongoDB

You should be aware of the reasons why technologists consider MongoDB to be among the top NoSQL databases.

The six ways listed below can help you utilize MongoDB’s advantages:

Distributed Data Platform

  • MongoDB may be operated across geographically dispersed data centers and cloud regions, enabling unprecedented levels of availability and scalability.
  • MongoDB elastically scales in terms of data volume and throughput with no downtime or changes to your application.
  • The technology offers you a fair level of consistency and adequate flexibility across different data centers.

Iterative and Rapid Development

  • Your company’s effective project delivery will no longer be impacted by shifting business needs.
  • It is quick and simple for developers to create and modify applications thanks to a flexible data format with dynamic schema, strong GUI, and command-line tools.
  • Continuous integration and delivery for productive operations are made possible by automated provisioning.
  • Static relational structures and intricate RDBMS procedures are now relics of the past.

Flexible Data Model

  • MongoDB stores data as adaptable documents that resemble JSON, which facilitates data merging and durability.
  • Working with data is made simple since the objects in your application code are mapped to the document model.
  • Schema governance controls, data access, sophisticated aggregations, and comprehensive indexing features remain unquestionably unaffected.
  • One may dynamically change the schema without any downtime.
  • This versatility makes data manipulation less of a concern for developers.

Decreased TCO (Total Cost of Ownership)

  • When MongoDB is used, application developers can perform their duties better.
  • Thanks to the Atlas Cloud service, the operations staff can do their work effectively as well.
  • As MongoDB uses common hardware, costs are greatly reduced.
  • The technology offers pay-as-you-go, on-demand pricing with yearly subscriptions, coupled with 24/7 international support.

Integrated Feature Set

  • Because of analytics and data visualization, event-driven streaming data pipelines, text and geographic search, graph processing, and in-memory performance, one may acquire a range of real-time applications.
  • RDBMS needs additional sophisticated technology and distinct integration needs to do this.

Long-term Commitment

  • Knowing about the evolution of this technology would astound you.
  • 4,900 clients, more than 1,000 partners, and over 30 million downloads have all been made.
  • You may be confident that your investment is well-placed if you implement this technology within your company.

For some reasons, MongoDB will not support the SQL language.

Since MongoDB uses a document-based query language that may be as practical as SQL, its querying approach is dynamic on documents.

There is no need to translate or map application objects to database objects since MongoDB is simple to scale.

It uses internal memory to store the working set and provide faster access to data.

Limitations of MongoDB

We’ve talked about MongoDB’s benefits. Here are some of its drawbacks:

  • It stores data using a lot of memory.
  • A maximum document size exists.
  • Query flexibility is less flexible
  • No transaction support is provided.
  • Despite its rapid evolution, there is a shortage of current information.

MongoDB Use Cases

Here, let’s talk about a few MongoDB real-time scenarios.

Single View:
  • Even with a minimal budget, MongoDB allows you to rapidly and simply develop a single view of anything.
  • An application with a single view gathers information from several sources and keeps it in a central repository to offer a single perspective of anything.
  • MongoDB’s document model, Dynamic Schemas, and expressive query language make single views easy to use.
  • The single view of MongoDB is commonly utilized in high-tech, retail, government, and financial institutions.
Internet of Things
  • MongoDB can let you swiftly realize the full potential of the Internet of Things.
  • High-speed data ingestion and real-time analytics offered by MongoDB are beneficial for the Internet of Things. MongoDB is used by businesses like Bosch and Thermofisher for IoT.
Analytics in real-time
  • Utilize MongoDB to quickly and instantly analyze any data, anywhere.
  • No matter the structure, format, source, or frequency of change of the data, it can store any sort of data.
  • Whether in your data center or the cloud, MongoDB is made to function on commodity hardware without the need for any extra hardware or software.
  • With the ability to evaluate data of any structure directly in the database, MongoDB eliminates the need for expensive data warehouse loads and offers real-time findings.
  • The city of Chicago uses MongoDB to analyze data from over 30 different departments to understand better and respond to circumstances, such as bus location, 911 calls, and even tweets.
  • Payment systems need to offer a flexible, real-time, and improved user experience if they want to surpass the competition.
  • Industry leaders, including consumer brands and enterprises, utilize MongoDB as the foundation of their always-on, always-secure, always-available payments infrastructure.
  • MongoDB’s payment services are used by businesses like Nets Icon Solution.
  • Data has always been a key component of video games. To improve game performance, data is necessary.
  • It helps with a number of things, including player profiles, telemetry, matchmaking, and scoreboards.
  • MongoDB’s adaptable document data structure makes it simple to calculate a player’s capacity.
  • Enhance player profile items with extra features including achievements, unlocks depending on progress, in-game money, new gear classes, and more.
  • Use enterprise-level security measures at the data layer to protect your gamers.
  • Gaming is used by businesses like Faceit and Sega using MongoDB.

Popular Commands of a MongoDB Database

Database Creation

There are no techniques for creating databases in MongoDB. When you first store values in the defined collection, a database is immediately created. If a database with the name “database name” doesn’t already exist, the following command will create it. It will be chosen if it does exist.

Command: Use Database_name

Dropping Database

A database and all of its related files can be deleted with the following command. The current database is the target of this command.

Command: db.dropDatabase()

Creating a Collection

The following command is used by MongoDB to build a collection. Normally, this is not necessary because MongoDB constructs collections automatically if certain documents are entered.

Command: db.createCollection(name, options)

Name: The string type identifies the name of the next collection.

Options: The memory size and collection indexing are determined by the document type. It is a choice-based parameter.

Displaying Collections

The following command will cause MongoDB to display all of the server’s collections.

Command: In shell you can type: db.getCollectionNames()

$in Operator

The $in operator chooses the documents where a field’s value matches a value in the given array. Utilize the following prototype to use the $in expression:

Command: {field: {$in: [<value1>, <value2>, … <valueN> ] } }

Where can the MongoDB NoSQL database be used?

Big Data and Hadoop applications may make heavy use of the MongoDB NoSQL database to cope with the enormous volumes of NoSQL data that make up a large percentage of Big Data.

Although MongoDB and SQL are both database systems, their effectiveness in the modern world distinguishes them from one another.

For the effective processing of all flowing unstructured data, MongoDB may also be used in social media and mobile apps.

The MongoDB NoSQL database is also widely used for content management and distribution. User data management and data hubs are other fields.

Who uses MongoDB?

Today, a sizable number of IT companies employ MongoDB as a database service for applications or data storage systems.

MongoDB is used by over 400 businesses around the world. The organizations that use MongoDB are listed below.

  • IBM
  • Intercom
  • Citrix
  • Delivery Hero.
  • Twitter
  • HTC
  • T-Mobile
  • Sony
  • Accenture
  • Zendesk

Future Scope of MongoDB

With more than half of the Fortune 100 organizations using Mongo, some of the biggest global businesses are effectively implementing it.

It has a thriving ecosystem with more than 100 partners and a significant investor base that is persistently investing in the technology.

One of the largest insurance businesses in the world, MetLife, uses MongoDB significantly for its customer care applications; Craigslist is heavily involved in utilizing MongoDB to archive its data.

The New York Times, one of the most well-known companies in the media sector, uses MongoDB for its picture uploads and the application that is used for form-building.

Finally, the world’s largest scientific project, led by the CERN physics laboratory, which uses MongoDB heavily for its data aggregation and data discovery applications, may be used to measure the level of MongoDB’s domination.

Who makes a good prospect to learn MongoDB technology?
  • Developers, Architects, and Administrators of software
  • Experts in databases and analytics
  • Administrators of systems and researchers
How can MongoDBhelpyour professional development?
  • The most used NoSQL database application is MongoDB, according to InfoWorld
  • In the United States, a MongoDB database administrator may make up to $129,000 annually.
  • Within the next two years, the Hadoop and NoSQL industries are anticipated to reach $3.3 billion -Wikibon


Some of the largest companies in the world utilize MongoDB, a very practical NoSQL database.

MongoDB provides businesses with a never-before-seen collection of features to digest all of their unstructured data because of some of its most potent characteristics.

MongoDB may be utilized for datasets like social media, movies, and other types of data because of its adaptability and scalability.

It is the right time for upskilling your career in MongoDB.

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