PostgreSQL How-To: Chinook Sample DB on a Distributed SQL Database

In this post, we are going to walk you through how to download and install the PostgreSQL version of the Chinook sample DB on the YugaByte DB distributed SQL database with a replication factor of 3.

About the Chinook Sample DB

The Chinook data model represents a digital media store, including tables for artists, albums, media tracks, invoices, and customers. Media-related data was created using real data from an iTunes Library. Customer and employee information was created using fictitious names and addresses that can be located on Google maps and other well-formatted data (phone, fax, email, etc.). Sales information was auto-generated using random data for a four year period. The basic characteristics of Chinook include:

• 11 tables

• A variety of indexes, primary and foreign key constraints

• Over 15,000 rows of data

Here’s an ER diagram of the Chinook data model:

Download and Extract YugaByte DB

$ wget https://downloads.yugabyte.com/yugabyte-1.3.1.0-darwin.tar.gz
$ tar xvfz yugabyte-1.3.1.0-darwin.tar.gz && cd yugabyte-1.3.1.0/

Note: The above instructions are for version 1.3.1. To find the latest version of YugaByte DB, visit the quickstart page.

Configure Loopback Addresses

Add a few loopback IP addresses for the various YugaByte DB nodes to use.

sudo ifconfig lo0 alias 127.0.0.2
sudo ifconfig lo0 alias 127.0.0.3
sudo ifconfig lo0 alias 127.0.0.4
sudo ifconfig lo0 alias 127.0.0.5
sudo ifconfig lo0 alias 127.0.0.6
sudo ifconfig lo0 alias 127.0.0.7

Create a 3 Node Cluster

With the command below, you’ll create a 3 node cluster with a replication factor of 3.

$ ./bin/yb-ctl --rf 3 create

Check the Status of the YugaByte DB Cluster

Now let’s take a look at the status of the cluster and all the nodes that comprise it.

$ ./bin/yb-ctl status

As you can see from the output, we have three nodes running locally with a replication factor of 3. This means that every piece of data is being replicated on all three nodes.

Enter the YSQL Shell

Next, run the ysqlsh command to enter the PostgreSQL shell.

$ ./bin/ysqlsh --echo-queries
ysqlsh (11.2)
Type "help" for help.
postgres=#

YSQL is YugaByte DB’s PostgreSQL-compatible, distributed SQL API.

We are now ready to build the Chinook database.

Download and Install the Chinook Database

Download the Chinook Scripts

You can download the Chinook database that is compatible with YugaByte DB from our GitHub repo. The three files are:

• chinook_ddl.sql which creates tables and constraints

• chinook_genres_artists_albums.sql which loads artist and album information

• chinook_songs.sql which loads individual song information

Create the Chinook Database

CREATE DATABASE chinook;

Let’s confirm we have the exercises database by listing out the databases on our cluster.

postgres=# \l

Switch to the chinook database.

postgres=# \c chinook
You are now connected to database "chinook" as user "postgres".
chinook=#

Build the Chinook Tables and Objects

chinook=# \i /Users/yugabyte/chinook_ddl.sql

We can verify that all 11 of our tables have been created by executing:

chinook=# \d

Load Sample Data into Chinook

Next, let’s load our database with sample data.

chinook=# \i /Users/yugabyte/chinook_genres_artists_albums.sql

and

chinook=# \i /Users/yugabyte/chinook_songs.sql

Do a simple SELECT to pull data from the “Track” table to verify we now have some data to play with.

chinook=# SELECT "Name", "Composer" FROM "Track" LIMIT 10;

Explore the Chinook Sample DB

That’s it! You are ready to start exploring the Chinook sample database.

If you are looking for a new database administration and SQL development tool, you can check out DBeaver, which is compatible with YugaByte DB.

Thanks for reading.