The features of a core WordPress site are handled by 11 core database tables. These tables are created with the default WordPress installation with the necessary data to get started. The database table structure is mainly designed for blogs and also acts as a base for content management sites. The flexibility of the default database is enormous considering the limitations of 11 tables and the initial design for blogging purposes. We have the ability to use existing tables for many of the applications without needing any custom tables.
The default screens in WordPress automatically insert, update, select, and delete the data to existing tables within WordPress core files. In application development, we need to be able to add custom data to these tables or modify these database tables from the frontend of the site instead of using the backend...