PostgreSQL is often called the world's most advanced open source database. In this course, PostgreSQL: Index Tuning and Performance Optimization, you will get a look at index tuning and some performance optimization methods. You'll start with an introduction to tuning and optimization in PostgreSQL and how the EXPLAIN keyword works. Next, you'll see how indexes improve performance and move into some advanced concepts for indexes. Then, you'll get to learn about some best practices for populating large databases and be shown some important resources for PostgreSQL. By the end of this course, you'll be better prepared to tackle PostgreSQL databases challenges with performance in mind.