Master Hibernate and JPA with Spring Boot in 100 Steps - Step 66 - Spring Data JPA Repository - CRUD Methods

The video tutorial provides an in-depth look at the Spring Data Repository, explaining its hierarchy and the various methods available for CRUD operations. It covers the CRUD repository, paging and sorting repository, and JPA repository, highlighting their specific functionalities. Practical examples demonstrate how to create, update, and retrieve data using these repositories, with a focus on unit testing to validate operations.

What is the fundamental repository in Spring Data that provides basic operations?

• Spring Data Repository

• CRUD Repository

• Paging and Sorting Repository

• JPA Repository

Which method in the CRUD repository is used to check if an entity with a specific ID exists?

• findAll

• existsById

• deleteById

• findById

What additional functionality does the Paging and Sorting repository provide?

• Batch processing

• Security features

• Transaction management

• Sorting and pagination

Which method is used to both create and update an entity in the CRUD repository?

• update

• save

• merge

• create

What is the purpose of the 'save and flush' method in JPA repository?

• To save an entity and immediately write changes to the database

• To save an entity and rollback changes

• To save an entity and clear the persistence context

• To save an entity and lock it for updates

How can you retrieve all courses using Spring Data JPA?

• Using a named query

• Using repository.findAll()

• Using repository.getAll()

• Using a custom query

What is the output of the repository.count() method?

• The number of updated entities

• The total number of entities in the database

• The number of entities with a specific ID

• The number of deleted entities