There are two parts to your self-hosted WordPress website, the files and the database.
Your WordPress site consists of the following files:
- WordPress Core Installation
- WordPress Plugins
- WordPress Themes
- Images and Files
- Additional files and static web pages
Everything that has anything to do with the look and feel of your site is in a file somewhere. For instance, your own user-generated content, such as edited themes, new plugins, and uploaded files are in the directory called wp-content.
Your WordPress database contains every post, every comment and every link you have on your blog. The database and the relations between the tables within it are created during the WordPress standard installation. Because WordPress interfaces with this database by itself, you as an end user, shouldn’t have to worry about its structure. Currently, the official WordPress distribution only supports the MySQL database engine.
For more information about self-hosted WordPress, visit the website of WordPress.org. It is a fabulous way to learn more about WordPress as well as submit questions and issues to the forum.
As always, wishing you Happy WordPressing!