Hibernate MCQs (Chapterwise Multiple Choice Questions)

Which of the following is not TRUE about StatelessSession interface/implementation in Hibernate Batch?

It does not provide many of the higher-level life cycle semantics

A stateless session does not implement a first-level cache

A stateless session has no persistence context associated with it

Operations performed using a stateless session cascade to associated instances

Answer & Explanation

Correct Answer: Operations performed using a stateless session cascade to associated instances

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Which of the following is NOT true about Hibernate OGM (still being developed)?

It is a persistence engine providing Java Persistence (JPA) support for NoSQL storage solutions

It is expected to be used to interact with all NoSQL solution in all use cases

It reuses Hibernate Core's object life cycle management and (de)hydration engine but persists entities into a key/value store instead of a relational database

It reuses the Java Persistence Query Language (JP-QL) as an interface to querying stored data

Answer & Explanation

Correct Answer: It is expected to be used to interact with all NoSQL solution in all use cases

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Query objects use ____ to retrieve data from the relational database

HQL

C#

.Net

Java

Answer & Explanation

Correct Answer: HQL

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Which of the following statement is NOT true?

The load() method returns null, when the unique id could not found in the database

The load() method returns proxy by default and the data base will not be effected until the invocation of the proxy

The load() method throws an exception,when the unique id could not found in the database

The get() method returns null when the unique id is unavailable in the database.

Answer & Explanation

Correct Answer: The load() method returns null, when the unique id could not found in the database

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Hibernate takes care of mapping Java to the database using ___?

xpath

XML

PL-SQL

XSLY

Answer & Explanation

Correct Answer: XML

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If Hibernate does not commit the transaction it can _______.

zip it up

backflip

rollback

fallback

Answer & Explanation

Correct Answer: rollback

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Which of the following provides an interface between application and data stored in the database?

Transaction

Session

TransactionFactory

ConnectionProvider

Answer & Explanation

Correct Answer: Session

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Which one of the following statements is True about the following query: from Item as I where i.description = :description

the Item indicates the name of the entity class and it's case sensitive

The query is using native SQL syntax

the letter I is alias and the "as" keyword must be place in front of the alias

this query is using positional parameter binding

Answer & Explanation

Correct Answer: the Item indicates the name of the entity class and it's case sensitive

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Which one of the following statements is true about using annotation to setup Inheritance Models?

The default value of discriminatorType element in @DiscriminatorColumn is DiscriminatorType.INTEGER

the @Inheritance annotation is used on the subclass to setup the inheritance mapping strategy

the @DiscriminatorValue annotation is used to specify the value in the in the discriminator column in database

the name element of @DiscriminatorColumn annotation specify the name of table

Answer & Explanation

Correct Answer: the @DiscriminatorValue annotation is used to specify the value in the in the discriminator column in database

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Which one of the following statements is true?

The load() method and get() method of Session interface are same

The load() method can return a poxy than immediately hitting the database.

The load() method of Session interface will return null if no row find in the database

The get() method of Session interface will throw exception if no row find in the database

Answer & Explanation

Correct Answer: The load() method can return a poxy than immediately hitting the database.

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Hibernate Quick Quiz

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