Master Hibernate and JPA with Spring Boot in 100 Steps - Step 83 - Performance Tuning-Indexes

The video tutorial emphasizes the importance of creating good indexes in relational databases to enhance performance. It explains how to use execution plans to identify the right indexes for tables and provides practical examples, such as indexing by name or city, to optimize query performance. Although the tips are not specific to Hibernate, they are crucial for database tuning.

Why is it important to have good indexes in a relational database?

• To enhance data encryption

• To ensure data is stored securely

• To improve data retrieval performance

• To reduce database size

What is one method to identify the right index for a table?

• By counting the number of columns

• By analyzing the execution plans of queries

• By reviewing the database schema

• By checking the database size

How do different databases handle execution plans?

• They have unique methods for generating execution plans

• They do not use execution plans

• They all use the same method

• They rely on user input for execution plans

When should you consider creating an index on a non-primary key column?

• When the column is rarely used in queries

• When the column is frequently used in queries

• When the column is a foreign key

• When the column is a text field

What is a key takeaway regarding indexes and query columns?

• Indexes should be created on all columns

• Indexes are not necessary for performance

• Indexes should only be created on primary keys

• Identify columns frequently used in queries and create indexes on them