How To Install and Use PostgreSQL on Ubuntu 18.04

If you're looking for a reliable, open-source relational database management system, PostgreSQL is a great option. In this tutorial, we'll walk you through the process of installing and using PostgreSQL on Ubuntu 18.04.

Step 1: Install PostgreSQL

First, update the package list:

sudo apt-get update

Next, install PostgreSQL:

sudo apt-get install postgresql postgresql-contrib

Once the installation is complete, you can start PostgreSQL:

sudo systemctl start postgresql

To make sure PostgreSQL starts automatically at boot time, run:

sudo systemctl enable postgresql

Step 2: Create a Database and User

By default, PostgreSQL creates a new user called "postgres" with administrative privileges. To create a new database and user, switch to the "postgres" user:

sudo su - postgres

Then, create a new database:

createdb mydatabase

Next, create a new user and set a password:

createuser myuser -P

Replace "mydatabase" and "myuser" with the names you want to use for your database and user.

Step 3: Connect to the Database

To connect to the database as the new user, run:

psql -d mydatabase -U myuser

You'll be prompted for the password you set earlier. Once you're connected, you can start creating tables and inserting data.

Conclusion

PostgreSQL is a powerful and versatile database management system, and installing it on Ubuntu 18.04 is a straightforward process. By following the steps in this tutorial, you'll be up and running with PostgreSQL in no time.

Keywords: PostgreSQL, Ubuntu 18.04, Install, Use, Database, User, psql, createdb, createuser.