This used to form the relationship between posts and terms. This table consists of three columns and only IDs are used as data. Let's identify some of the most important columns in this table:
object_id | Stores the ID of the post or custom post type that connects with the taxonomy |
term_taxonomy_id | Stores the ID of the taxonomy |
This is purely an associative table, which connects two tables using IDs. As a developer, you just need to assign the relationship, and this table doesn't have different uses based on the type of the site.