B-Tree & B+Tree Indexing Explained | Database Indexing for Interviews

In this video, I explain B-Trees and B+Trees – the backbone of modern database indexing. You’ll learn: How B-Trees work for indexing and searching The difference between B-Trees vs B+Trees Why most relational databases (MySQL, PostgreSQL, Oracle) use B+Trees Use cases where they shine the most By the end, you’ll clearly understand why B+Trees are the industry standard and how they help databases handle millions of records efficiently. Perfect for system design interviews, database engineers, and anyone curious about how indexing really works.