In a nutshell, your Joomla site consists of two main parts:
- The site's Joomla file system.
- The site's database.
The database is where your Joomla system will be storing:
- The content you will be creating in your Joomla based site.
- Data referencing to your Joomla system settings.
Every time you write an article and save it, your Joomla system will send the article content to a specific part of your site database.
If you unpublish currently published on your site certain article, this change will also be stored in a specific part of your site database.