Master Hibernate and JPA with Spring Boot in 100 Steps - FAQ 1 - When does Hibernate send updates to the database?

This video tutorial provides an in-depth look at how transactions work in a database context, focusing on when queries are executed and how changes are persisted. It explains the role of the persistence context in tracking changes and highlights the importance of transaction completion. The video also covers the use of the flush method to push changes to the database and discusses rollback mechanisms in case of errors. Key concepts include the timing of query execution, the persistence context, and error handling in transactions.

What is the primary role of Hibernate in managing transactions?

• To immediately save changes to the database

• To create new transactions automatically

• To delay saving changes until the end of a transaction

• To delete all changes after a transaction

What happens when you change an entity's attribute in Hibernate?

• The change is immediately saved to the database

• The change is tracked by the persistence context

• The change is reversed automatically

• The change is ignored

When does Hibernate typically save changes to the database?

• At the start of a transaction

• After each change is made

• At the end of a transaction

• When the application is closed

How does Hibernate handle changes before the end of a transaction?

• It ignores them

• It saves them immediately

• It deletes them

• It tracks them in the persistence context

What is the default behavior of Hibernate regarding transaction management?

• To manage changes until the transaction ends

• To save changes immediately

• To rollback changes immediately

• To ignore all changes

What is the purpose of the flush operation in Hibernate?

• To create a backup of changes

• To end the transaction

• To discard all changes

• To immediately send changes to the database

What happens if an update fails after a flush in Hibernate?

• The application crashes

• All changes are rolled back

• Only the failed update is rolled back

• The transaction continues unaffected