We have provided an online playground with several environments for you to experiment with various concepts discussed throughout the book: practice SQL queries using a relational database, play around with MongoDB, a NoSQL database, or see how a graph database works using Cypher and Neo4j. A number of visualizations illustrate how search tree structures work.
There are three ways how you can use the online playground: either by creating an account on this site, by downloading a VirtualBox appliance, or as a Docker container. We recommend the latter two options if you're planning to use the playground with many students or want to host your own environment.
See this YouTube video on how to use the online practice environment.
After starting an appliance, a shortcut on the desktop will open the local playground environment. (Note: the username and password of the appliance user are both set to "pdbmbook".)
A Dockerfile repository is hosted at this GitHub repository from which you can set up your own Docker containing containing the full playground environment. Docker is available both for Linux, Mac, and Windows operating systems.
Read the instructions below or see this YouTube video on how to install the practice environment.
Docker for Windows requires Microsoft Windows 10 Professional or Enterprise 64-bit (i.e. a Windows edition supporting Hyper-V). If you're running another Windows version, you'll have to use the Docker Toolbox and VirtualBox. To install, first download and install Docker Toolbox. Next, open a PowerShell command line instance and enter the following:
docker-machine create virtualbox
Once booted, run the following command:
docker-machine env virtualbox | Invoke-Expression
Stop the virtual machine:
docker-machine stop virtualbox
Next, open VirtualBox. A machine called "virtualbox" should be present. Open its settings and head to the Networking tab. Open the "Advanced" settings under "Adapter 1", and open the "Port Forwarding" window. Add a new port forwarding rule as follows:
docker-machine start virtualbox
In your PowerShell window, navigate to the "pdbmbook-docker-master" directory using the "cd" command, and enter:
docker build .
Docker will now start preparing your image. This might take a few minutes depending on your Internet connection. Once done, verify the image is up by entering:
This will show something like:
REPOSITORY TAG IMAGE ID CREATED SIZE none none 258b38268c91 41 seconds ago 1.44GB ubuntu xenial 0b1edfbffd27 11 days ago 113MB
Run the image using the following command (make sure to replace "258b38268c91" with your correct image ID):
docker run -i -t -p 8081:80 258b38268c91
Once done booting, you can navigate to 127.0.0.1:8081 in your web browser to use the playground environment.
© Principles of Database Management 2021.
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