What is Postgresql, and how do you prepare for it?


 

If you are a newbie or a database professional, this blog post will help you!

Database management systems are the systems that are used to manage, store and run data-related queries. RDMS (relational database management systems) in DBMS is the program that is used to maintain relational databases. 

Furthermore, in RDMS, the term PostgreSQL plays a crucial role. It is a stalwart champion known for its robustness, extensibility, and open-source nature. Thus, practicing PostgreSQL interview questions is vital when going for an interview. 

So, whether you're a database professional looking to master this powerful tool, this blog post will help you. We will delve into the depths of PostgreSQL, its significance, and how to prepare for it effectively.

Without having any further ado, let’s get started!

What is PostgreSQL?

PostgreSQL is an advanced open-source object-relational database system. 

It is often called "Postgres." 

It was developed to provide a powerful and efficient solution for handling complex data requirements while adhering to relational principles. 

A dedicated community of contributors developed PostgreSQL. It has evolved over the years to become a feature-rich database management system. With time, it has enhanced its extensibility, stability, and support for various programming languages.

Why PostgreSQL Matters?

PostgreSQL's significance cannot be overstated in the world of a database. It offers a wide range of features and capabilities. These capabilities and features make it a preferred choice for businesses and developers. Let’s discuss a few of them below:

Advanced-Data Types

PostgreSQL supports an array of advanced data types. It includes:

  • Arrays
  • hstore (key-value pairs)
  • JSON
  • Custom data types.

This versatile behaviour allows developers to handle diverse data with ease.

Extensibility

PostgreSQL allows users to define their data types, operators, and functions. It facilitates the creation of custom solutions tailored to specific needs.

Concurrency Control

It employs Multi-Version Concurrency Control (MVCC). MVCC ensures that multiple transactions can occur simultaneously without conflicting with each other.

Scalability

PostgreSQL's ability to handle large datasets and complex queries contributes to its reputation as a scalable solution.

Robustness and Reliability

PostgreSQL ensures data durability and minimal downtime. It can do with features like point-in-time recovery and crash-safe replication.

Learn from Online PostgreSQL Resources and Tutorials

Online tutorials and resources are an effective way to learn PostgreSQL from scratch. 

Online PostgreSQL Compiler

Online PostgreSQL compilers can be used to gain hands-on experience without installing PostgreSQL. These platforms provide a virtual environment to practice SQL queries and commands. 

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