Master Hibernate and JPA with Spring Boot in 100 Steps - Step 62 - Choosing Between Isolation Levels

The video tutorial covers key concepts of database isolation, including dirty read, non-repeatable read, and phantom read. It explains the four isolation levels: read uncommitted, read committed, repeatable read, and serializable. The tutorial discusses the trade-offs between data consistency and system performance, emphasizing the importance of choosing the right isolation level for specific applications. It concludes with a brief mention of upcoming topics on Spring and JPA transaction management.

Which of the following is NOT a type of read anomaly discussed in database isolation?

• Dirty read

• Non-repeatable read

• Consistent read

• Phantom read

What is the main issue with the 'read uncommitted' isolation level?

• It prevents phantom reads

• It allows dirty reads

• It locks all rows

• It solves all read anomalies

Which isolation level locks all rows read during a transaction to prevent non-repeatable reads?

• Serializable

• Read uncommitted

• Read committed

• Repeatable read

What is a potential downside of using the 'serializable' isolation level?

• It is not supported by most databases

• It allows dirty reads

• It causes poor performance

• It does not prevent phantom reads

Why is 'read committed' often chosen as the default isolation level in applications?

• It provides the highest level of data consistency

• It prevents all types of read anomalies

• It balances data integrity with system performance

• It is the fastest isolation level