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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 is true about ORM?
A - ORM stands for Object-Relational Mapping.
B - ORM is a programming technique for converting data between relational databases.
Answer : C
Explaination
ORM stands for Object-Relational Mapping (ORM) is a programming technique for converting data between relational databases.
Q 2 - Which of the following is true about SessionFactory object in hibernate?
B - SessionFactory object allows for a Session object to be instantiated.
Answer : D
Explaination
SessionFactory object configures Hibernate for the application using the supplied configuration file and allows for a Session object to be instantiated. The SessionFactory is a thread safe object and used by all the threads of an application.
Q 3 - Which of the following is true about hibernate.dialect property in hibernate configuration?
A - This property makes Hibernate generate the appropriate SQL for the chosen database.
B - This property makes Hibernate generate the appropriate java code for the chosen database.
Answer : A
Explaination
This property makes Hibernate generate the appropriate SQL for the chosen database.
Q 4 - Which method is used to get a persistent instance from the datastore?
Answer : B
Explaination
Session.get returns the persistent instance of the given named entity with the given identifier, or null if there is no such persistent instance.
Q 5 - Which of the following element maps java.util.SortedMap property in hibernate?
Answer : D
Explaination
This is mapped with a <map> element and initialized with java.util.TreeMap. The sort attribute can be set to either a comparator or natural ordering.
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 - Whis of the following is true about second level cache in hibernate?
A - The second-level cache is the SessionFactory based cache.
B - The second-level cache can be configured on a per-class and per-collection basis.
C - The second-level cache is mainly responsible for caching objects across sessions.
Answer : D
Explaination
Second level cache is an optional cache and first-level cache will always be consulted before any attempt is made to locate an object in the second-level cache. The second-level cache can be configured on a per-class and per-collection basis and mainly responsible for caching objects across sessions.
Q 8 - When a Nonstrict-read-write concurrency strategy is to be used?
Answer : C
Explaination
Nonstrict-read-write strategy makes no guarantee of consistency between the cache and the database. Use this strategy if data hardly ever changes and a small likelihood of stale data is not of critical concern.
Q 9 - Which of the following is true about @Id annotation?
A - Hibernate detects that the @Id annotation is on a field.
Answer : C
Explaination
Hibernate detects that the @Id annotation is on a field and assumes that it should access properties on an object directly through fields at runtime.
Q 10 - Which of the following is true about HQL?
A - Hibernate Query Language (HQL) is an object-oriented query language.
Answer : C
Explaination
Hibernate Query Language (HQL) is an object-oriented query language, similar to SQL, but instead of operating on tables and columns, HQL works with persistent objects and their properties.