What is Indexing in Databases? | Why Indexes Matter

Before diving into advanced database indexes, let’s start with the basics: 👉 What is an index? 👉 Why do we need indexing in databases? 👉 How indexes speed up queries like searching, filtering, and joins By the end of this video, you’ll understand why every modern database relies on indexing and why it’s one of the most important concepts for system design interviews.