When you install WordPress, it automatically sets up a total of 12 database tables by default. These tables serve as the backbone of your WordPress site, storing various essential data required for its smooth functioning. Among the tables created, some of the crucial ones include wp_posts (to store all posts and pages content), wp_users (to manage user information and login credentials), wp_comments (to store user comments), and wp_options (to store various site settings and configuration options). Understanding the role of each database table enables you to gain insights into how WordPress organizes and manages data, allowing you to optimize and fine-tune your website's performance and maintenance effectively.