Quiz for Spring Data JPA

Q1: What does JPA stand for in Spring Data JPA?

A. Java Persistent API B. Java Persistence API C. Java Programming Access D. Java Platform Adapter

Q2: Which interface is extended to create a repository in Spring Data JPA?

A. CrudRepository B. JpaRepository C. Repository D. All of the above

Q3: Which annotation is used to mark an entity class in JPA?

A. @Entity B. @Table C. @Model D. @Data

Q4: What is the default ID generation strategy in JPA?

A. UUID B. SEQUENCE C. AUTO D. IDENTITY

Q5: Which annotation is used to define primary key in JPA?

A. @Key B. @Id C. @PrimaryKey D. @Generated

Q6: Which annotation specifies the table name in the database?

A. @Entity B. @Column C. @Table D. @JoinTable

Q7: Which annotation maps a Java field to a database column?

A. @Field B. @Column C. @Map D. @DbColumn

Q8: Which method is used to save an entity in JpaRepository?

A. store() B. insert() C. save() D. persist()

Q9: Which keyword can be used in method names to generate queries?

A. select B. findBy C. getBy D. fetchBy

Q10: What does the @GeneratedValue annotation do?

A. Generates table schema B. Auto-generates primary key values C. Creates repository D. Defines queries

Q11: Which annotation defines a one-to-many relationship?

A. @OneToOne B. @ManyToOne C. @OneToMany D. @ManyToMany

Q12: What is the purpose of the @Query annotation?

A. To execute native SQL B. To define custom queries C. To map entity D. To load schema

Q13: What does the flush() method do in JPA?

A. Closes session B. Syncs persistence context with database C. Deletes entity D. Clears entity cache

Q14: Which annotation is used to execute native SQL?

A. @SQL B. @Native C. @NamedNativeQuery D. @Query(nativeQuery = true)

Q15: What is Lazy loading in JPA?

A. Loads data in advance B. Loads only referenced entities C. Loads related entities on demand D. Always fetches all data

Q16: Which exception is thrown when no result is found in Spring Data?

A. NullPointerException B. NoSuchElementException C. EntityNotFoundException D. EmptyResultDataAccessException

Q17: Which method retrieves all records from the table?

A. getAll() B. findAll() C. fetchAll() D. readAll()

Q18: What is CascadeType.ALL used for?

A. Deletes entity only B. Ignores entity changes C. Applies all operations to child entities D. None of these

Q19: How do you define a custom repository method using JPQL?

A. Using @SQLQuery B. Using JPQL file C. Using @Query D. Using @NamedSQL

Q20: Which keyword in method name can be used to sort results?

A. SortBy B. OrderBy C. WithSort D. SortedBy