Programming

This article will instruct you how to install the PostgreSQL database server on Linux – Red Hat/Fedora, Ubuntu, Debian, and Arch Linux. Installing PostgreSQL on Debian Linux Here’s now to install PostgreSQL on the Debian Linux distribution (and distributions based on it): From the Default apt Repository You can install PostgreSQL server straight by the apt software repository on Debian Linux by running: Note the use of the sudo command to run the package installation as the root (administrative) user. Installing More Recent Versions From the PostgreSQL apt … Read more

This article will explain the differences between PostgreSQL and Oracle Database, and help you to decide which you should use in your project (The answer is PostgreSQL). Choosing the right database for your application, whether it’s a webapp, mobile app, or desktop application is vital. Changing database backend mid-development could be a costly (in both your time or money) and frustrating experience. Trying to decide between other databases like MySQL, MariaDB, MongoDB, SQLite and MSSQL? Check out our other guide here. Oracle Database Oracle Database, otherwise … Read more

This article will show you how to check the version (or versions) of PostgreSQL running on your Linux system. As it is possible to install multiple versions of PostgreSQL on the same machine, there are a few ways to check the running version, which are detailed below. Checking PostgreSQL Server Version To check the running PostgreSQL server version, use the following pg_config command: Check PostgreSQL Client Version To check which version of the PostgreSQL client you are running, run the following psql command: Finding the PostgreSQL Executables If you … Read more

This short tutorial will demonstrate how to test the connection to a PostgreSQL database locally and remotely from Linux. This article is part of our series on getting started with PostgreSQL, head back to our index that lists our full PostgreSQL guide. Testing PostgreSQL Database Connection on Ubuntu/Debian To test connectivity to a PostgreSQL server, you’ll need the PostgreSQL client installed if it is not already. Do this by running: Then, you can use the pg_isready command to test the connection to a database: One of the following … Read more

A common question is whether PostgreSQL is an SQL or NoSQL database (it’s not) – this article explains why. What is SQL SQL (pronounced sequel or S-Q-L) is the Structured Query Language – a language used by many relational database systems for querying data. It is also increasingly being used for defining data schemas in data analytics applications where the data is not stored in a database but is arriving as a data stream. Data defined and queried by SQL is structured tables that can have relationships between records – for example … Read more