Saturday , February 24 2024

How to Install PostgreSQL in Ubuntu 20.04


PostgreSQL is a powerful open-source relational database management system (RDBMS) that provides scalability, extensibility, and robustness. Installing PostgreSQL on Ubuntu 20.04 is a straightforward process that allows you to leverage its advanced features for your application development and data management needs.

Advantages of PostgreSQL

🌟 High performance: PostgreSQL is known for its exceptional performance in handling complex queries and large amounts of data.

🌟 Extensibility: With its support for user-defined stored procedures and different programming languages, PostgreSQL allows you to extend its functionality according to your specific requirements.

🌟 Data integrity and reliability: PostgreSQL provides ACID compliance, ensuring the integrity and consistency of your data, with reliable crash recovery and high availability options.

Disadvantages of PostgreSQL

🔸 Steeper learning curve: PostgreSQL’s extensive feature set and advanced capabilities may require some time and effort to become proficient.

🔸 Memory usage: Depending on the scale of your database, PostgreSQL can consume a significant amount of memory.

🔸 Slower write performance: Due to its focus on data integrity, write operations in PostgreSQL can be slower compared to other databases.

Features in PostgreSQL

✨ JSONB support: PostgreSQL allows you to store, index, and query JSON data efficiently, making it ideal for applications that require handling complex and dynamic data structures.

✨ Full-text search: PostgreSQL provides powerful full-text search capabilities, allowing you to build advanced search functionalities within your applications.

✨ Geospatial support: PostgreSQL offers extensive support for geospatial data with specialized geometric types and spatial indexing, enabling you to build location-based applications.

Step-by-Step Guide to Install PostgreSQL in Ubuntu 20.04

Step 1: Update System Packages

Before installing PostgreSQL, it’s essential to update your system’s package list to get the latest versions of the software.

Step 1

$ sudo apt update
$ sudo apt upgrade -y

Step 2: Install PostgreSQL

Next, you can install PostgreSQL using the apt package manager.

Step 2

$ sudo apt install postgresql -y

Step 3: Verify the Installation

To confirm that the installation was successful, you can check the PostgreSQL version.

Step 3

$ psql –version

Step 4: Create a PostgreSQL User

By default, PostgreSQL creates a system user called “postgres,” but you need to create a separate user for your application.

Step 4

$ sudo -u postgres createuser –interactive –pwprompt

Step 5: Create a PostgreSQL Database

After creating a user, you can proceed to create a new database for your application.

Step 5

$ sudo -u postgres createdb dbname

Minimum Specifications for PostgreSQL Installation

Operating SystemUbuntu 20.04
Processor1 GHz or higher
Memory2 GB RAM
StorageAt least 50 GB available
NetworkInternet connection required for installation

All About PostgreSQL

Download Link (Linux)
Download Link (Windows)
Download Link (macOS)
Download Link (Android)
Download Link (iOS)

Frequently Asked Questions (FAQs)

Q1: Can I use PostgreSQL with other programming languages?

A1: Yes, PostgreSQL has support for various programming languages through its extensive range of bindings and APIs.

Q2: How can I secure my PostgreSQL installation?

A2: PostgreSQL provides various security features like SSL encryption, role-based access control, and data encryption mechanisms. It’s crucial to follow security best practices and regularly update your installation.

Q3: Can I migrate data from other databases to PostgreSQL?

A3: Yes, PostgreSQL offers tools and utilities to smoothly migrate data from other databases, ensuring data integrity and minimal downtime.

Q4: Are there graphical interfaces available for managing PostgreSQL databases?

A4: Yes, there are several GUI tools like pgAdmin, DBeaver, and Navicat that provide intuitive interfaces for managing PostgreSQL databases.

Q5: Is PostgreSQL suitable for large-scale enterprise applications?

A5: Absolutely! PostgreSQL’s scalability and robustness make it an excellent choice for large-scale enterprise applications, handling terabytes of data and high concurrent user traffic.


In conclusion, installing PostgreSQL on Ubuntu 20.04 is a straightforward process that unleashes the power of this robust and feature-rich database management system. With its high performance, extensibility, and advanced capabilities, PostgreSQL is an ideal choice for a wide range of applications. You can further explore PostgreSQL’s extensive documentation and community resources to make the most out of this powerful RDBMS. Start leveraging the benefits of PostgreSQL today and take your data management to the next level!

Take action now and begin your journey with PostgreSQL!