Hibernate Framework Hibernate Mapping 2

Question 1

Which annotation creates a join table for a many-to-many relationship?

Accepted Answer

@JoinTable

Answer

The @JoinTable annotation specifies the join table and its columns used to implement a many-to-many relationship.

Question 2

What does CascadeType.ALL mean in Hibernate?

Accepted Answer

All persistence operations are cascaded to associated entities

Answer

CascadeType.ALL propagates all operations (persist, merge, remove, refresh, detach) from the parent entity to associated child entities.

Question 3

What does FetchType.LAZY mean in Hibernate?

Accepted Answer

Associated data is loaded only when accessed

Answer

FetchType.LAZY defers loading of associated entities until they are explicitly accessed in code.

Question 4

Which annotation is used to map an embedded value object in Hibernate?

Accepted Answer

@Embedded

Answer

The @Embedded annotation maps a class whose fields are stored in the same table as the owning entity.

Question 5

What is the purpose of @Embeddable in Hibernate?

Accepted Answer

Marks a class that can be embedded into another entity's table

Answer

@Embeddable designates a class as one that can be embedded into an owning entity, sharing the same database row.

Hibernate Framework Practice Test