Cascade types and behavior in Spring Boot - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does the CascadeType.ALL option do in Spring Boot JPA?

It applies all cascade operations (PERSIST, MERGE, REMOVE, REFRESH, DETACH) from the parent entity to its related child entities automatically.

beginner

Explain the behavior of CascadeType.PERSIST.

When the parent entity is saved (persisted), the related child entities are also saved automatically.

beginner

What happens if you use CascadeType.REMOVE on a parent entity?

Deleting the parent entity will also delete all its related child entities from the database.

intermediate

Describe the effect of CascadeType.MERGE.

When the parent entity is updated (merged), the changes in the child entities are also saved automatically.

advanced

What is the purpose of CascadeType.DETACH in entity relationships?

It detaches the child entities from the persistence context when the parent entity is detached, so they are no longer managed by JPA.

Which cascade type will automatically save child entities when the parent is saved?

A CascadeType.PERSIST

B CascadeType.REMOVE

C CascadeType.DETACH

D CascadeType.REFRESH

CascadeType.PERSIST saves child entities when the parent entity is saved.

If you want child entities to be deleted when the parent is deleted, which cascade type should you use?

A CascadeType.REMOVE

B CascadeType.MERGE

C CascadeType.PERSIST

D CascadeType.DETACH

CascadeType.REMOVE deletes child entities when the parent entity is deleted.

What does CascadeType.ALL include?

A Only PERSIST and REMOVE

B All cascade operations (PERSIST, MERGE, REMOVE, REFRESH, DETACH)

C No cascade operations

D Only MERGE and REFRESH

CascadeType.ALL applies all cascade operations automatically.

Which cascade type detaches child entities when the parent is detached?

A CascadeType.REMOVE

B CascadeType.PERSIST

C CascadeType.MERGE

D CascadeType.DETACH

CascadeType.DETACH detaches child entities from the persistence context with the parent.

When using CascadeType.MERGE, what happens?

A Child entities are deleted

B Child entities are saved for the first time

C Child entities are updated along with the parent

D Child entities are detached

CascadeType.MERGE updates child entities when the parent entity is updated.

Describe the different cascade types in Spring Boot JPA and their behaviors.

Think about what happens to child entities when you save, update, delete, detach, or refresh the parent.

Explain why cascade types are useful in managing entity relationships in Spring Boot.

Consider how cascade types help keep related data in sync without extra code.