In the previous chapter, we looked at user management and permission related features of WordPress, while implementing basic user creation features. We can now move into one of the most important aspects of an application.

Generally, a database acts as the primary location from which your web application data will be accessible from frontend interfaces or third-party systems. Planning and designing the database should be one of the highest priority tasks in the initial stages of a project. As developers, we have the opportunity to design the database from scratch in many web applications. WordPress comes with a pre-structured database, and therefore the task of planning the table structure and adapting to existing tables becomes much more complex than everyone thinks. Throughout this chapter, we will focus on the basics of planning and accessing databases for web applications...