Hibernate Test 1

Question 1

In Hibernate, what is Query Level Cache?

Accepted Answer

The query-level cache is a query resultset cache that works in tandem with the second-level cache.

Answer

The query-level cache is the Session based cache

Answer

Both of the above

Answer

None of the above

Question 2

Is the SessionFactory object thread-safe?

Accepted Answer

Yes

Answer

No

Question 3

What is the meaning of lazy loading?

Accepted Answer

Lazy loading is a technique in which objects are loaded on demand basis

Answer

Lazy loading is a technique in which objects are persisted on demand basis

Answer

Both of the above

Answer

None of the above

Question 4

In the hibernate configuration, which of the following statements concerning the hibernate.dialect property is true?

Accepted Answer

This property makes Hibernate generate the appropriate java code for the course chosen database

Answer

This property makes HIbernate generate the appropriate Java code for the course chosen database

Answer

Both of the above

Answer

None of the above

Question 5

Which of the following statements concerning Hibernate's Query object is correct?

Accepted Answer

All of the above

Answer

A Query instance is used to bind query parameters, limit the number of results returned by a query, and then execute the query.

Answer

To retrieve data from the database and construct objects, use the Hibernate Query Language (HQL) string.

Answer

To retrieve data from the database and construct objects, use the query objects SQL string.

Question 6

What is the difference between the session object's save() and persist() methods?

Accepted Answer

save saves the object and returns the id of the instance whereas peresist do not return anything after saving the instance

Answer

save saves the object and returns status whereas persist store status in different

Answer

There is no difference

Answer

None of these

Question 7

Which of the following statements concerning the @Id annotation is correct?

Accepted Answer

Both of the above

Answer

Hibernate assumes that it should access properties on an object directly through fields at runtime

Answer

Hibernate detects that the @ld annotation is on a field

Answer

None ot these

Question 8

Which of the following statements about ORM vs. JDBC is correct?

Accepted Answer

All of these

Answer

ORM system helps in Transaction management and automatic key generation

Answer

ORM system lets business code a access objects rather than DB tables

Answer

ORM system hides details of SQL queries from OO logic

Question 9

When should you utilize a read-only concurrency strategy?

Accepted Answer

Use this method if data is rarely updated and a slight chance of stale data isn't a major concern.

Answer

Use this strategy for read-mostly data where it is critical to prevent stale data in concurrent transactions

Answer

Use it for reference data only

Answer

None of the above