MongoDB vs PostgreSQL Difference Between Databases

With NoSQL, you can scale your database up or down depending on your requirements, giving you more flexibility. Vertical scalability is popular for cloud-based applications that help manage resources like computing power and storage more efficiently. As a bonus, this type of scaling is less expensive than horizontal scalability provided by most SQL databases. SQL is a computer language used by most relational database management systems (RDBMS) to store, manipulate, and retrieve data stored in the tabular format.

differences between NoSQL and SQL

It is similar to Structured Query Language (SQL) common in relational database management systems (RDBMS) in that it describes data organized into tables, by columns and rows. CQL differs from relational databases in that, though ScyllaDB does support multiple tables, it does not support JOIN operations between its tables. As the name implies, SQL allows performing query operations on relational or tabular data and returns the data in a structured data model consisting of rows and columns.

SQL vs NoSQL: Which is better?

If you are looking for database tools for your SQL databases, we would like to bring to your notice Devart’s dbForge product line. This line includes premium all-in-one IDEs for major database management systems as well as standalone tools and add-ins for specific database-related tasks. RDBMS stands for Relational Database Management System and represents software that is used to manage, manipulate, query, and retrieve data stored in a relational database. And while that is the most notable difference between the databases, you might still be wondering what exactly that means for you. We don’t need to mention column-oriented databases here, like Cassandra, as they are different in architecture and not conception to such a large degree.

Pragmatically, both models are useful and even growing together. As delineated in many examples above, traditional RDBMSs are also rebranding as generalized databases and connecting with NoSQL. Clearly both paradigms remain valid in the modern transition to the cloud.


A schema allows for strong data consistency and integrity, as each column holds a specific data type. SQL databases support the SQL language, which excels in manipulating relational data. They allow for data abstraction to protect data integrity and run queries quickly and efficiently. JSON is a simple and lightweight format that is easy to read and write. With the rise of  non-relational databases, web-based APIs and microservices, many developers prefer the JSON format. However, it can also be used to parse, store and export data across other databases, both SQL and NoSQL.

When the data is consistent, the waiting requests are handled in the order they arrived and the cycle repeats. Early results of eventual consistency data queries may not have the most recent updates. This is because it takes time for updates to reach replicas across a database cluster. Consistency refers to a database query returning the same data each time the same request is made. Strong consistency means the latest data is returned, but, due to internal consistency methods, it may result with higher latency or delay. With eventual consistency, results are less consistent early on, but they are provided much faster with low latency.

What are the pros and cons of NoSQL and SQL?

MongoDB uses denormalization, which embeds related data within documents. Denormalization helps to optimize read operations, as all the data you need for a query will be present within that document. In contrast, PostgreSQL uses logical and stream replication to ensure high availability. Logical replication selectively replicates specific tables or subsets of data. Streaming replication creates standby replicas that receive changes in the primary database. Additionally, PostgreSQL uses the PostgreSQL Automatic Failover (PAF) to allocate a new primary if there’s a failure event.

When choosing a database type, it is crucial to carefully consider which properties suit your specific use case. If transaction accuracy and reliability are critical, then a SQL database with ACID properties is the way to go. However, if availability and partition tolerance is essential, then a NoSQL database following the CAP theorem is the better choice.

SQL vs. NoSQL Today: Databases, Differences & When To Use Which

These tutorials will help you get up and running as quickly as possible in the language of your choice. If you’re not familiar with what NoSQL databases are or the different types of NoSQL databases, start here. MongoDB uses sharding, read scalability, and automatic data balancing to offer horizontal scalability. While MongoDB doesn’t have when to use NoSQL vs SQL the same level of community maturity, it does offer drivers for many programming languages. There is lots of community and aid to help you interact with MongoDB using one of your preferred programming languages. Beyond the core architectural and performance differences between MongoDB and PostgreSQL, there are other key differences.

differences between NoSQL and SQL

These relational databases, which offer fast data storage and recovery, can handle great amounts of data and complex SQL queries. One of the major differences between SQL and NoSQL is the language used. SQL stands for Structured Query Language, evolving since the 1970s into a powerful language for querying structured data. NoSQL is a newer database system that doesn’t use a standard query language but employs JSON documents for data storage. NoSQL offers various interaction models, from key-value stores to wide-column databases, allowing different ways of interacting with data.

SQL Join

Thus the accuracy of data in SQL databases is higher as compared to other database types. Since in relational databases data is stored in tables, it is easy to restrict access to confidential information. Non-relational databases are primarily used to store and process Big Вata for real-time web apps. NoSQL is a blanket term to refer to databases that step outside the framework of traditional SQL syntax and relational database structures. There are four main types of NoSQL databases, and each one works differently. NoSQL databases tend to be more flexible than SQL ones, because data doesn’t need a predefined schema.

  • Let’s take a closer look at use cases for both types of databases.
  • NoSQL databases use a variety of data models, including key-value, document, columnar, and graph, to store and manage data.
  • While both of these are good choices, each have clear advantages and disadvantages which must be kept in mind.
  • Now that you understand the fundamentals, let’s explore five key differences between SQL and NoSQL databases that can help you decide which technology best suits your data storage needs.
  • Some NoSQL databases boast the impressive speed of data processing.

While SQL databases have been the traditional choice for app developers, NoSQL databases have become increasingly popular over the past few years. If you’re new to databases, then you might consider developing a firm grasp of both SQL and NoSQL databases by taking a cost-effective, online course through Coursera. For those who like to jump right in and learn by doing, one of the easiest ways to get started with NoSQL databases is to use MongoDB Atlas. Atlas is MongoDB’s fully managed, global database service that is available on all of the leading cloud providers. Both PostgreSQL and MongoDB use a form of load balancing to evenly distribute read operations across multiple replicas while achieving a high degree of scalability. Their distributed architecture processes move data to improve performance.

Running SQL on Db2?

No matter what field you are in, choosing the correct database for your organization is an important decision. Each type of NoSQL DBMS is best suited to particular use cases and has individual pros and cons to consider. Make a business case for diversity and inclusion initiatives with this data. With our pre-employment tests, you can assess your candidates for not only technical database skills but also soft skills and cognitive abilities.

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