What is MongoDB? Non-relational Database

Database triggers are a great way to perform audits, ensure data consistency and data integrity, and to perform complex event processing. Check out the dedicated Database Triggers article to learn more about the different types of triggers and how to use them. MongoDB provides a number of authentication mechanisms for users to access the database. The most common is the Salted Challenge Response Authentication Mechanism (SCRAM), which is the default. When used, SCRAM requires the user to provide an authentication database, username, and password. Authentication ensures that only authorized users can access the database.

what is MongoDB

To learn more about the native time series collections and other MongoDB features that make working with time series data easier, check out the Time Series Data article. Sharding in MongoDB allows for much greater horizontal scalability. Horizontal scaling means that each shard in every cluster houses a portion of the dataset in question, essentially functioning as a separate database. Combining the data of the distributed shards forms a single, comprehensive database much better suited to handling the needs of a popular, growing application with zero downtime. Documents in MongoDB are stored in the BSON format, which is a binary-encoded JSON format.

Key Components of MongoDB Architecture

Check out the Replication article to learn more about how replication works in MongoDB. Check out the dedicated Database Sharding article to learn more about the different sharding architectures and what problems they solve. MongoDB provides developers with a number of useful out-of-the-box capabilities, whether you need to run privately on site or in the public cloud. To use the mongo shell, you must have a user set up on a MongoDB cluster. Then you install the mongo shell on your computer and connect to the user account on the cluster. MongoDB has a large and thriving community of developers across the open-source community, academia, and among system integrators and consulting firms across the globe.

what is MongoDB

MongoDB is a database management platform that provides a NoSQL alternative to traditional databases such as SQL. While SQL is excellent when used with structured data, non-relational databases are very useful for developers that work with unstructured, distributed data. However, the documents in a single collection don’t necessarily need to have exactly the same set of fields. This is what we call a “flexible schema.” This flexibility allows developers to iterate faster and migrate data between different schemas without any downtime. However, if you want to lock down your schema at a certain point, you can do so by applying validation rules to your collections.

Platform and Ecosystem Maturity

MongoDB Compass offers a GUI for those who prefer a visual interface. MongoDB Compass provides a way to visualize your data, create indexes, and assemble complex aggregation pipelines that streamline how you work with data. Using MongoDB enables your team to go further and faster when developing software applications that handle data of all sorts in a scalable way.

what is MongoDB

This method returns the first document that meets the supplied filter query phrase. MongoDB also allows facilities to perform ad hoc queries during real-time analysis for better optimisation and performance of data. The _id field in a MongoDB document represents a unique value, and the _id field acts as the primary key for the document. It also includes official driver support for C, C++, C#, and.Net and Go, Java, Node.js, Perl, PHP, Python, Motor, Ruby, Scala, Swift, and Mongoid.

Role of a Website & MongoDB

Build cross-platform apps with serverless APIs, backend sync, and more. See Percona’s recent news coverage, press releases and industry recognition for our open source software and support. All of Percona’s open-source software products, in one place, to
download as much or as little as you need. It provides a wide selection of indices to make searches easier and faster. This allows analysts to find specific data more quickly and smoothly.

  • All client operations in a sharding environment are handled through a lightweight process called mongos.
  • MongoDB has been designed with developer productivity and flexibility in mind.
  • MongoDB was built for people building internet and business applications who need to evolve quickly and scale elegantly.
  • It’s possible to store any data in any document in any collection at any time.
  • This is a key contrast between MongoDB and other relational databases.
  • MySQL (link resides outside IBM) uses a structured query language to access stored data.

Offering drivers for all major programming languages, MongoDB allows you to immediately start building your application without spending time configuring a database. A collection is quite similar to a table in any other relational database management system (RDMS), such as Oracle. As stated in the introduction, collections do not impose any form of structure. MongoDB querying style is dynamic on documents as it is a document-based query language that can be as utilitarian as SQL. MongoDB is easy to scale, and there is no need to convert or map application objects to database objects.

What are the Advantages of MongoDB?

Organizations can use MongoDB and Hadoop to perform risk modeling, predictive analytics and real-time data processing. The document model provides flexibility to work with complex, fast-changing, messy data from numerous sources. It enables developers to quickly deliver new application functionality. The aggregation framework enables users https://www.globalcloudteam.com/ to obtain the kind of results for which the SQL GROUP BY clause is used. Aggregation operators can be strung together to form a pipeline – analogous to Unix pipes. The aggregation framework includes the $lookup operator which can join documents from multiple collections, as well as statistical operators such as standard deviation.

what is MongoDB

Using the technique of sharding, an architect can achieve both write and read scalability. Data balancing occurs automatically and transparently to the user by the shard balancer. Structured Query Language (SQL) existed even before the World Wide Web. However, as websites’ functionality grew, developers wanted to generate web pages using content that could change over time without redeploying the code. NoSQL has relaxed ACID (atomicity, consistency, isolation, durability) properties and guarantees better performance, scalability, flexibility, and reduced complexity. MongoDB Atlas, MongoDB’s DBaaS (Database-as-a-Service) platform, has a minimum of three member replica sets.

Supporting hybrid and multi-cloud applications

Developers adjust and reformat the database schema as the application evolves without the help of a database administrator. When needed, MongoDB can coordinate and control changes to the structure of documents using schema validation. MongoDB is built on a scale-out architecture that has become popular with developers of all kinds for developing scalable applications with evolving data schemas. Document databases are highly flexible, allowing variations in the structure of documents and storing documents that are partially complete.

There are drivers for 10+ languages, with dozens more added by the community. Document databases allow embedding of documents to describe nested structures and easily tolerate variations in data in generations of documents. Specialized data formats like geospatial are efficiently supported.


This approach ensures performance remains consistent, even as the data volume surges. The journey of MongoDB started back in 2007, and it was officially released in 2009. mongodb vs postgresql It was developed to tackle the limitations of existing databases, particularly when it came to horizontal scalability and the rigidity of their schema designs.

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