Master Hibernate and JPA with Spring Boot in 100 Steps - Step 08 - Writing a Save Method to Update and Insert an Entity

The video tutorial explains how to create a save method that can handle both insert and update operations for course data. It uses an entity manager to persist new courses and merge existing ones. The tutorial demonstrates using a command line runner to save a new course and explains how Hibernate generates a sequence for course IDs. Finally, it shows how to verify the inserted data using the H2 console.

What is the purpose of the save method in the context of data management?

How can you determine whether to insert or update data using the save method?

What action should be taken if the course ID is null?

Explain the difference between the persist and merge methods in the entity manager.

What steps are involved in inserting a new course using the repository?