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The key differences between SQL and NoSQL databases

  • By Agira Technologies
  • August 5, 2019
There is a long debate going about finding the best database to work with, and we keep evolving on it.
In an attempt to find the best database, we understand the fact of finding the key difference between SQL and NoSQL database would bring a bright light to this debate if we reach out to more depth of this topic.

Key Differences between SQL and NoSQL

SQL Database is a Relational Database and a structured one whereas NoSQL is a Non-relational database likely to be more document and distributed than structured.

You might ask what exactly mean Relational Database?
Relational database strictly adheres relations where it is divided into the set of rows and columns to store data often named as tables, but the Non-relational database has a document-oriented or distributed storage which doesn’t require any table structure.
NoSQL databases have a dynamic schema for document type or unstructured data whereas SQL Databases have a well-designed pre-defined schema.
SQL databases are vertically scalable whereas NoSQL databases are horizontally scalable. You can scale the SQL databases by expanding the strength of its hardware. Similarly, when it comes to NoSQL databases you can scale it by expanding the database servers in the pool of assets to lessen the heap.
While SQL uses structured query language for defining data, NoSQL uses the collection of documents which is also known as UnQL (Unstructured Query Language).
NoSQL uses hierarchical data storage, and there is no hierarchical data storage for SQL.
We can easily add the new data in NoSQL without requiring prior steps whereas SQL might require doing some changes like backfilling data, altering schemas.
Since SQL has a standard interface for handling complex queries, it would be great to deal with complex queries. Feebly, we don’t have any standard interface in NoSQL, so it’s quite difficult to handle complex queries in NoSQL.

Some Prominent SQL Databases

MySQL the most famous SQL relational database, compatible for creating both small and large-size applications.
Help you to create a replica of Database to reduce the workload. Increased Scalability. Allow you to divide the databases into small chunks to make use of low-level servers.

Oracle an object-relational database that helps you to achieve great customer service and reliability. It provides great platform support. Better scalability and Reliable.

Some Prominent NoSQL Databases

MongoDB The most popular NoSQL database, an open-source that provides greater customer service.

Apache CouchDB a database that makes the perfect utilization of JSON and JavaScript for various database operations.

Oracle gives a recent entry to NoSQL.
In most cases, All the businesses will lean on both databases. NoSQL database might have high popularity due to its high scalability and speed, but still, there would be a highly inescapable situation for businesses to use the SQL database.

Why use SQL database?

SQL actively protects the integrity of your database by providing ACID compliance. Due to its structured data, you will not require any integrated system support for using various types of data.
Moreover, SQL is the highly preferable option for so many businesses due to its predefined structure and schemas.

Why use NoSQL database?

It’s getting popularity by allowing you to store different data types together and you can easily scale by spreading around multiple servers.
If you are in need of developing an application within a speculated time, then you can go for NoSQL which will speed up your performance with its rapid development phase.


Every business will have their own preferences based on the project requirements so at any cast Lowering down any of these databases will not be the solution at all.
If you are in need of NoSQL today, it doesn’t mean that it will be stick on to it all day.
There might be different preferences, distinct requirements to prefer over some other database. So figure out your requirements and find out the database which wisely provides the integrated support for your project development.

Agira Technologies

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