Master Hibernate and JPA with Spring Boot in 100 Steps - FAQ 3-Do Read Only Methods Need a Transaction?

The video tutorial explores the necessity of transactions in read-only methods, focusing on the use of entity manager and the implications of lazy loading. It explains the relationship between user and comment entities, highlighting the importance of transactions when retrieving data through relationships. The tutorial concludes with recommendations for experimenting with established relationships to deepen understanding.

Why might a read-only method not require a transaction when using an entity manager?

• Because transactions are only needed for write operations.

• Because the entity manager does not support transactions.

• Because the entity manager automatically handles transactions.

• Because read-only methods never need transactions.

What is the main reason a line of code might fail without a transaction?

• There is no connection to the database.

• The user does not have permission.

• The database is offline.

• The code is too complex.

What happens to the default transaction in an entity manager after a find method executes?

• It pauses until the next query.

• It waits for user input.

• It ends immediately after execution.

• It continues until the application ends.

Why is a transaction necessary when using relationships to retrieve data?

• To reduce code complexity.

• To improve query performance.

• To establish a connection to the database.

• To ensure data integrity.

What is recommended to better understand the use of transactions in relationships?

• Using only eager loading.

• Ignoring transactions altogether.

• Experimenting with entity relationships.

• Reading more documentation.