Instagram is a platform where users share content, interact with others through likes, comments, and messages, and manage their profiles. This guide will model its core functionalities in a step-by-step fashion, ensuring efficient and scalable database design.

In this case study, we’ll design a database for Instagram using Entity-Relationship (ER) modeling and map it to a relational schema. By the end, you’ll have a clear understanding of how Instagram’s core functionalities are structured through database design.