Databases are designed to offer an organized mechanism for storing, managing and retrieving information through the use of tables. In terms of your website, a database can be used to add features to your website such as a shopping cart, a blog or a forum.
You can add a database to your 123-reg hosting package through your 123-reg control panel:
Scroll down to the Web hosting section.
Select the relevant domain name from the drop down box and click on the Manage button.
Click on the Database link in the Web Tools section of your hosting control panel.
Enter a Username and Password in the Create a Database section..
Press the Create button to save the change.