Comprehensive quiz covering Spring Data, Spring Data JPA, Hibernate ORM, entity mapping, transactions, query methods, caching, and performance tuning.
Fundamentals of the Java Persistence API: entities, the persistence context, EntityManager, and the entity lifecycle.
20 questionsMapping Java classes to database tables: @Column, @Table, inheritance strategies, embedded objects, and composite keys.
20 questionsMapping one-to-one, one-to-many, many-to-one, and many-to-many relationships. Cascading, fetch types, and join columns.
20 questionsWriting queries with JPQL, Criteria API, and native SQL. Named queries and dynamic query construction.
20 questionsTransaction management in Spring: @Transactional, propagation, isolation levels, rollback rules, and transaction boundaries.
20 questionsSpring Data repositories: CrudRepository, JpaRepository, PagingAndSortingRepository, custom implementations, and derived query methods.
20 questionsSpring Data query methods: method name derivation, @Query annotation, Querydsl integration, and projections.
20 questionsHibernate internals: first-level and second-level cache, session factory, dirty checking, and flushing strategies.
20 questionsIdentifying and fixing N+1 problems, using batch fetching, entity graphs, and pagination best practices.
20 questionsDatabase schema management with Hibernate DDL auto, Flyway, and Liquibase. Auditing with Spring Data Auditing and Envers.
20 questions