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Hibernate Online Quiz
Following quiz provides Multiple Choice Questions (MCQs) related to Hibernate Framework. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
Q 1 - Which of the following database is not supported by Hibernate?
Answer : C
Explaination
FoundationDB is a NoSQL database and is not supported by Hibernate.
Q 2 - Which of the following is true about Transaction object in hibernate?
A - A Transaction represents a unit of work with the database.
B - Transactions in Hibernate are handled by an underlying transaction manager.
Answer : D
Explaination
A Transaction represents a unit of work with the database and most of the RDBMS supports transaction functionality. Transactions in Hibernate are handled by an underlying transaction manager and transaction (from JDBC or JTA).This is an optional object and Hibernate applications may choose not to use this interface, instead managing transactions in their own application code.
Q 3 - Session.beginTransaction method begins a unit of work and returns the associated Transaction object.
Answer : A
Explaination
Session.beginTransaction method begins a unit of work and returns the associated Transaction object.
Q 4 - Which method is used to re-read the state of the given instance from the underlying database?
Answer : A
Explaination
Session.refresh re-reads the state of the given instance from the underlying database.
Q 5 - Which of the following is true about <property> element?
A - The <property> element is used to map a Java class property to a column in the database table.
B - The name attribute of the element refers to the property in the class.
C - The column attribute of the element refers to the column in the database table.
Answer : D
Explaination
The <property> element is used to map a Java class property to a column in the database table. The name attribute of the element refers to the property in the class and the column attribute refers to the column in the database table. The type attribute holds the hibernate mapping type, this mapping types will convert from Java to SQL data type.
Q 6 - Which of the following situation represents many-to-many relationship?
B - An employee can have multiple certificates.
Answer : A
Explaination
An employee can have multiple certificates and same certificate can be conferred to many employees. Such situation represents many-to-many association.
Q 7 - What is second level cache in hibernate?
Answer : A
Explaination
The second-level cache is the SessionFactory based cache and is mainly responsible for caching objects across sessions.
Q 8 - When a Read-only concurrency strategy is to be used?
Answer : C
Explaination
Read-only concurrency strategy is suitable for data which never changes. Use it for reference data only.
Q 9 - You would need one SessionFactory object per database using a separate configuration file.
Answer : B
Explaination
You would need one SessionFactory object per database using a separate configuration file.
Q 10 - Which of the following is true about HQL?
A - Hibernate supports named parameters in its HQL queries.
B - HQL supports a range of aggregate methods, similar to SQL.
Answer : C
Explaination
Hibernate supports named parameters in its HQL queries. HQL supports a range of aggregate methods, similar to SQL.