In today's world, many of the developers doesn't have in-depth knowledge of WordPress core features and yet, capable of turning your requirement into a working solution. However, these solutions are often based on assumptions, rather than knowing the exact process and data usage under the hood.
Tracking database usage and knowing the exact data needs of any given process is crucial for building flexible and extendable solutions that integrate perfectly with other parts of the site. Let's identify some of the use cases where you need perfect knowledge of data usage in WordPress features: