- Install and Connect to PostgreSQL 10 on Ubuntu 16.04
- Creating and Deleting a PostgreSQL Database
- Listing and Switching Databases in PostgreSQL
PostgreSQL (pronounced “post-gress-Q-L”) is a household name for open source relational database management systems. Its object-relational meaning that you’ll be able to use objects, classes in database schemas and the query language. In this tutorial, we will be demonstrating some essentials like creating, listing and deleting a database.
If you have already installed PostgreSQL to your Ubuntu 16.04 server using our last tutorial, your next step is to create a database. You’ll be accomplishing this task by using the default superuser, postgres, to log in.
Step 1: Login as the Postgres User
su - postgres
Step 2: Enter the PostgreSQL Environment
With the psql command, you’ll be greeted by its current version and command prompt.
Type "help" for help.
Step 3: Creating the PostgreSQL Database
Let’s create our first database by typing in the command below. Replace dbname with the database name of your choice.
CREATE DATABASE dbname;
Verify Creation of PostgreSQL Database
Using the following command allows us to view the databases in our PostgreSQL instance (you can ignore, delete or utilize the default databases: postgres, template0, template1)
Deleting a PostgreSQL Database
Once you’ve backed up your removing your PostgreSQL database is a cinch! Its similar to creating a database but we will be using the drop command. In my command line example, the database name is “dbname”. By using the list command in the previous section, you’ll be able to view your databases’ names. Replace dbname with your database’s name in the command below.
DROP DATABASE dbname;