The PostgreSQL Development Team has announced the latest version PostgreSQL 11. PostgreSQL is an open source object-relational database system. It is one of the leading database server used for production servers. PostgreSQL allows us to execute stored procedures in various programming languages, like C/C++, Python, Java, Perl, Ruby, and its own PL/pgSQL, which is similar to Oracle’s PL/SQL. This tutorial will help you with installing PostgreSQL database server on your Ubuntu 18.04 LTS, Ubuntu 16.04 LTS, and 14.04 LTS systems.
- Recommended => Install pgAdmin4 on Ubuntu
Step 1 – Enable PostgreSQL Apt Repository
PostgreSQL packages are also available in default Ubuntu repository. So you need to add PostgreSQL apt repository to your system suggested on official PostgreSQL website using following command.
Start with the import of the GPG key for PostgreSQL packages.
sudo apt-get install wget ca-certificates wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
Now add the repository to your system.
sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt/ `lsb_release -cs`-pgdg main" >> /etc/apt/sources.list.d/pgdg.list'
Step 2 – Install PostgreSQL on Ubuntu
Now as we have added PostgreSQL official repository in our system, First we need to update the repository list. After that install Latest PostgreSQL Server in our Ubuntu system using following commands.
sudo apt-get update sudo apt-get install postgresql postgresql-contrib
Multiple other dependencies will also be installed.
Step 3 – Connect to PostgreSQL
After installing the PostgreSQL database server, by default, it creates a user ‘postgres’ with role ‘postgres’. Also creates a system account with the same name ‘postgres’. So to connect to Postgres server, log in to your system as user postgres and connect database.
sudo su - postgres psql
Now you are logged in to PostgreSQL database server. To check login info use following command from the database command prompt.
To disconnect from PostgreSQL database command prompt just type below command and press enter. It will return you back to the Ubuntu command prompt.