Interview Questions and Answers for 'Associations' | Search Interview Question

Interview Questions and Answers for 'Associations' - 6 question(s) found - Order By Newest

Q1. Which of the following syntax is correct ?import static java.lang.System.*;or static import java.lang.System.*;

Ans. import static java.lang.System.*;

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Very frequently asked Hibernate interview question. Frequently asked in TCS ( based on 2 feedback )

Q2. What are different types of associations in Hibernate ?

Hibernate

Ans. There are 4 types of associations in Hibernate

One to One
One to Many
Many to One
Many to Many

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Q3. What is cascade ?

Hibernate

Ans. Instead of Saving Parent as well as Child Entities individually , Hibernate provides the option to persist / delete the related entities when the Parent is persisted.

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Q4. Which type of associated Entities are Eagerly loaded by Default ?

Hibernate

Ans. OneToOne

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Q5. How are the concept of Association related to Composition and Inheritance ?

Core Java

Ans. Composition and Inheritance are the different types of Associations for Classes.

Composition is a has-a association between classes.
Inheritance is a is-a association between classes.

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Q6. Explain different inheritance mapping strategies with JPA / Hibernate.

Hibernate

Ans. table per hierarchy
table per concrete class
table per sub class

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