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Basic Hibernate MCQ

1. Which of the following is NOT a valid hibernate performance tuning strategy?

Avoid clearing the whole Session after flushing

Set ReadOnly to "true" on Queries and Criteria, when objects returned will never be modified

Set FlushMode to "Never" on Queries and Criteria, when flushing is not necessary at this point

Avoid join duplicates

Answer

Correct Answer: Avoid clearing the whole Session after flushing

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2. Which of the following is NOT a valid layer in hibernate framework?

hibernate framework layer

java application layer

transaction layer

backhand API layer

Answer

Correct Answer: transaction layer

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3. Which of the following is not a VALID hibernate interceptor event?

SelectEvent

SaveOrUpdateEvent

PersistEvent

ReplicateEvent

Answer

Correct Answer: SelectEvent

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4. Which of the following is NOT a valid CascadeType value?

PERSIST

MERGE

REFRESH

DELETE

Answer

Correct Answer: DELETE

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5. Which of the following is NOT true about Hibernate Template?

Since it decouples the application from the spring framework, it is recommended that HibernateTemplate is always used for integration

They perform common setup routines for you, let you skip the boilerplate and concentrate on the logic you want

All Hibernate Template features can be achieved in an aspect-oriented way using Spring's Declarative Transaction Management

It automatically open and close sessions and commit or rollback transactions after the code execution

Answer

Correct Answer: Since it decouples the application from the spring framework, it is recommended that HibernateTemplate is always used for integration

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6. Which of the following is not a Session method?

Session.saveorupdate()

Session.remove()

Session.save()

Session.persist()

Answer

Correct Answer: Session.remove()

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7. Which one of the following statements is true about the following HQL query: select p.number from employee e join e.phones p

This query is using outer join so it'll return all the Phone entity instances no matter it is associated with an Employee or not.

This query is missing the joining condition so it won't work

The query indicates that the "number" is the name of one of the columns of the Phone table

Because the "phones" is a collection association field, the path navigation couldn't continue

Answer

Correct Answer: Because the "phones" is a collection association field, the path navigation couldn't continue

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8. Which of the following is NOT true about sharding in Hibernate (Hibernate Shards)?

The primary goal of Hibernate Shards is to enable application developers to query and transact against sharded datasets using the standard Hibernate Core API

Hibernate Shards can be conceptually divided into Generalized sharding logic, Application specific sharding logic and Hibernate Default sharding

Hibernate Shards primarily consists of shard-aware implementations of many of the Hibernate Core interfaces

Hibernate Shards can be conceptually divided into Generalized sharding logic and Application specific sharding logic

Answer

Correct Answer: Hibernate Shards can be conceptually divided into Generalized sharding logic, Application specific sharding logic and Hibernate Default sharding

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9. Which of the following is NOT true about SessionFactory?

Its a Singleton class

Its initialization process is expensive as it loads all configurations including database setting, OR settings

It helps in customized extraction of data.

Configures HIBERNATE with HIBERNATE configuration file for use in application

Answer

Correct Answer: It helps in customized extraction of data.

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10. Which one of the following statement is NOT true about single table inheritance strategy?

The single table strategy uses one table to contain all the possible state of a hierarchy

Single table strategy will be more wasteful of database space.

There shouldn't be any columns left unfilled in the single table strategy

The single table strategy is the most performance way in polymorphic queries and write operations.

Answer

Correct Answer: There shouldn't be any columns left unfilled in the single table strategy

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11. Which of the following statements is True about one to one relationship mapping?

mappedBy element should be specified in the @OneToOne annotation in the entity that defines a join column

One to one mapping can only be unidirectional

The @JoinColumn annotation goes on the mapping of the entity that is mapped to the table containing the foreign key

One to one mapping can only be bidirectional

Answer

Correct Answer: The @JoinColumn annotation goes on the mapping of the entity that is mapped to the table containing the foreign key

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12. Which one of the following statements is true about joining associations in Hibernate?

In HQL the LEFT keyword in LEFT JOIN FETCH is optional

When using HQL join queries you have to explicitly specify the join condition using either WHERE or ON clause

HQL provides a fetch join in the FROM clause to lazy load the associated objects

When using outer joins, Hibernate will always return a list containing distinct items.

Answer

Correct Answer: In HQL the LEFT keyword in LEFT JOIN FETCH is optional

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13. Which of the following statements is NOT true about persistent instance?

Any change made on the persistent object will be synchronized with the database after the transaction ends.

Before session get closed, an object will becomes persistent after it get saved by the persistence manager's save() method.

A persistent instance has a primary key set as its database identifier

An object is not persistent if it's retrieved from the database by the execution of query.

Answer

Correct Answer: An object is not persistent if it's retrieved from the database by the execution of query.

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14. If you want to save your modifications at any time without knowing about the state of an session, then which of the following operations will you use:

Neither Merge nor Update

Merge

Update

Both Merge and Update

Answer

Correct Answer: Merge

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15. Which of the following correctly describes org.hibernate.cache log category?

Log all first-level cache activity but NOT second-level cache activity

Log NEITHER first-level NOR second-level cache activity

Log both first-level and second-level cache activity

Log all second-level cache activity

Answer

Correct Answer: Log all second-level cache activity

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16. Which one of the following statements is true about the following HQL query: select department from Department department join department.employees employee where employee.address.state = 'CA' and department.name='marketing'

The query is using outer join

The department objects returned are lazy loaded.

The query will return all departments not matter the department has an employee or not

The query returns a List of Object[] arrays, at index 0 is Department and Index 1 is Employee

Answer

Correct Answer: The department objects returned are lazy loaded.

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17. Which of the following is NOT a valid org.hibernate.ConnectionReleaseMode?

ON_OPEN

AFTER_TRANSACTION

AFTER_STATEMENT

ON_CLOSE

Answer

Correct Answer: ON_OPEN

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18. 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

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

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19. Which one of the following statements is NOT true about transient state?

objects referred by other transient instances are transient

Transient instance is always associated with a row in a database

After a persisted instance gets deleted, it'll become a transient instance

Objects instantiated using new operator aren't persisted immediately and their state is transient.

Answer

Correct Answer: Transient instance is always associated with a row in a database

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20. Which one of the following statement is NOT true about many to one relationship mapping?

The @JoinColumn must be defined with @OneToMany annotation

The @JoinColumn defines the name of the foreign column

If the relationship is bidirectional mappedBy attribute must be defined for the @OneToMany annotation

The @ManyToOne defines a single-valued association to another entity class that has many-to-one multiplicity.

Answer

Correct Answer: The @JoinColumn must be defined with @OneToMany annotation

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21. 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

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

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22. Which one of the following statements is NOT true about the following HQL query: from Item item join item.bids bid where item.description like '%gc%' and bid.amount > 100

The query returns a List of Object[] arrays

The query assigns the alias "item" to the class ITEM and alias "bid" to the Bid class

The query returns all combinations of associated Bids and Items

The bids collection of each Item will be eagerly loaded.

Answer

Correct Answer: The bids collection of each Item will be eagerly loaded.

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23. Which one of the following statements is NOT true about entity lifecycle events

Firing of a PostPersist event does not indicate that the entity has committed successfully to the database

If the PERSIST cascade option is set on a relationship of an object that is being persisted and the target object is also a new object, the PrePersist event is triggered on the target object.

The PostLoad callback occurs after the data for an entity is read from the database and the entity instance is constructed.

When the SQL for deletion of an entity gets sent to the database, the PostRemove event will get fired and it indicates success of deletion

Answer

Correct Answer: When the SQL for deletion of an entity gets sent to the database, the PostRemove event will get fired and it indicates success of deletion

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24. Which one of the following statements is NOT true about join strategy (table per subclass)?

It is more is expensive to query subclass when using join strategy

Join strategy is the most efficient way to insert data

Join strategy is the most efficient way to store data

In join strategy every class will have its state mapped to a different table

Answer

Correct Answer: Join strategy is the most efficient way to insert data

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25. Which of the following correctly describes org.hibernate.SQL log category?

Log all SQL DDL statements as they are executed

Log all SQL DML statements as they are executed

Log all JDBC parameters

Log the state of all entities

Answer

Correct Answer: Log all SQL DML statements as they are executed

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26. 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

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

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27. Which one of the following statements is NOT true about using annotation mapping Entity hierarchies?

The @Inheritance annotation has a "strategy" attribute which can be used to define the inheritance mapping strategy

The @DiscriminatorColumn is used to defined the named of the column that is used to differentiate subclasses

The root class of the hierarchy needs to be marked by the @Inheritance annotation

The @DiscriminatorValue doesn't have default value and must be defined.

Answer

Correct Answer: The @DiscriminatorValue doesn't have default value and must be defined.

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28. Which of the following does NOT correctly describe LockMode.NONE?

It represents the absence of a lock

All objects switch to this lock mode at the end of a Transaction

Objects associated with the session via a call to update() or saveOrUpdate() also start out in this lock mode

If an object is requested with this lock mode, a WRITE lock will be obtained if it is necessary to actually read the state from the database

Answer

Correct Answer: If an object is requested with this lock mode, a WRITE lock will be obtained if it is necessary to actually read the state from the database

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29. Which of the following statements is NOT true about mapping one class to multiple tables using annotation?

entities may be mapped across multiple tables by making use of the @SecondaryTables annotation

The "table" attribute needs to be defined in the @Column annotation to specify which table the column belongs

The @PrimaryKeyJoinColumn annotation specifies the primary key of the primary table

entities may be mapped across multiple tables by making use of the @SecondaryTable annotation

Answer

Correct Answer: The @PrimaryKeyJoinColumn annotation specifies the primary key of the primary table

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30. Which of the following is NOT true about Second Level Cache?

It is called 'second-level' because there is already a cache operating in Hibernate for the duration of an open session

It always "associates" with the Session Factory object

It exists as long as the session factory is alive

By default it effectively holds on to the identifiers for an individual query

Answer

Correct Answer: By default it effectively holds on to the identifiers for an individual query

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31. Which one of the following statements is NOT true about HQL joins?

Path navigation from one entity is a form of outer join.

Join conditions can be specified explicitly by using the 'join' keyword

An inner join between two entities returns the objects from both entity types that satisfy all the join conditions

Join conditions can be specified implicitly as a result of path navigation.

Answer

Correct Answer: Path navigation from one entity is a form of outer join.

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32. Which of the following statements is true about using cache in Hibernate?

Caching query will have more impact on applications that perform many inserts, deletes or updates.

The iterate()method of the Session and Query interfaces is provided to take advantage of second-level cache.

The query cache cache all the entities properties returned in the query result set

To enable query cache all it needs is to invoke setCacheable(true) on the query instance.

Answer

Correct Answer: The iterate()method of the Session and Query interfaces is provided to take advantage of second-level cache.

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33. 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

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

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34. Which one of the following statements is NOT true about Hibernate's cascading persistence?

cascade ="delete" tells Hibernate to navigate the association when performing delete

cascade="all-delete-orphan" is the same as cascade="all" in addition it deletes any persistent instant when it get dereferenced

cascade="save-update" is the default setup in hibernate

cascade ="none" tells hibernate to ignore association

Answer

Correct Answer: cascade="save-update" is the default setup in hibernate

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35. 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

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

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36. Which one of the following statements is NOT true about using components in Hibernate?

Hibernate component is the lowest level of unit and cannot own other component

We can declare a component of an entity by using <component> element

Component is the user defined class that is persisted to the table of owning entity

Hibernate support both unidirectional and bidirectional composition

Answer

Correct Answer: Hibernate component is the lowest level of unit and cannot own other component

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37. Which one of the following statements is NOT true about many to many relationship mapping?

The many to may relationship can be both unidirectional or bidirectional

mappedBy element must be included for the bidirectional many to many relationship

The @JoinColumn and @InverseJoinColumns are used to defined the column names of the foreign keys in the join table

The @JoinTable annotation must be defined on the reverse side of the many to many relation ship

Answer

Correct Answer: The @JoinTable annotation must be defined on the reverse side of the many to many relation ship

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38. Which one of the following statements is NOT true about entity lifecycle events?

If the timestamp of the most recent update made to the queried table is early than the timestamp of the cached query results, then the cached results are discarded

UpdateTimestampsCache is a special cache region that holds timestamps of the most recent updates to each table

The query cache must be enabled using a Hibernate property setting:hibernate.cache.use_query_cache true

Hibernate allows you to specify a different named cache region for each query

Answer

Correct Answer: If the timestamp of the most recent update made to the queried table is early than the timestamp of the cached query results, then the cached results are discarded

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39. Object-oriented languages represent data as a ____ of objects

delimited

tabular

array

graph

Answer

Correct Answer: graph

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40. Which one of the following statements is true about how Hibernate retrieves an object?

You cannot retrieve objects using native SQL queries in Hibernate

HQL Hibernate Query Language is a full object oriented query language

When you're using get() method to retrieve an object that doesn't exist in the database, Hibernate will throw an exception

When you using load() method to retrieve an object that doesn't exist in the database, Hibernate will return null

Answer

Correct Answer: HQL Hibernate Query Language is a full object oriented query language

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41. Which of the following is NOT a valid caching strategy?

Read-only

Write-only

Nonstrict read/write

Read/write

Answer

Correct Answer: Write-only

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42. Which of the following is NOT true about First Level Cache?

Hibernate uses this cache by default

It loads objects and make them available to the entire application

it reduces the number of generated SQL queries within a given transaction

It always "associates" with the Session object

Answer

Correct Answer: It loads objects and make them available to the entire application

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43. Which one of the following statements is NOT true about embedded objects?

The @AttributeOverride annotation defines what type the database uses to save the embeddable field

The @Embedded annotation means the annotated field is embeddable type

User @Emebeddable on a class means it's fields and properties will be persistable as part of another entity.

The Embeddable type can be reused on other types

Answer

Correct Answer: The @AttributeOverride annotation defines what type the database uses to save the embeddable field

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44. Their are five mismatches that occur when storing objects in relational database:granularity,inheritance,identity,associations and

files

data

databases

navigation

Answer

Correct Answer: navigation

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45. Which of the following is used by Hibernate to redirect the logging output to preferred logging frameworks?

log4j

JCL

Simple Logging Facade for Java (SLF4J)

JDK logging

Answer

Correct Answer: Simple Logging Facade for Java (SLF4J)

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46. Which one of the following statement is true about the following query: FROM Item AS item WHERE item.description like ? AND item.date > ?

The as keyword is optional

The query indicates that there is a table named item and has columns named as "description" and "date"

The index of binding parameter start from 1 instead of 0

The FROM WHERE AND are HQL keywords and has to be uppercase

Answer

Correct Answer: The as keyword is optional

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47. 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

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

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48. Which one of the following statements is NOT true about hibernate Session?

Session is Hibernate's interface for persistence-related operations such as storing and retrieving objects

An instance of Session is lightweight and is inexpensive to create and destroy.

Hibernate session has nothing to do with the web-tier HttpSession.

Hibernate can detect changes to the objects and make updates to the database automatically even if changes are made within the same session.

Answer

Correct Answer: Hibernate can detect changes to the objects and make updates to the database automatically even if changes are made within the same session.

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49. Which of the following is an INVALID LockMode?

OPTIMISTIC_FORCE_INCREMENT

UPDATE

PESSIMISTIC_FORCE_INCREMENT

OPTIMISTIC

Answer

Correct Answer: UPDATE

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50. Which of the following statement is TRUE about sorting in Hibernate?

A sorted collection is sorted in-memory using java comparator, while order collection is ordered at the database level using order by clause

An order collection is sorted in-memory using java comparator, while sorted collection is ordered at the database level using order by clause

A sorted collection is either sorted in-memory using java comparator or using order by clause at the database level

An order collection is either sorted in-memory using java comparator or using order by clause at the database level

Answer

Correct Answer: A sorted collection is sorted in-memory using java comparator, while order collection is ordered at the database level using order by clause

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51. Which of the following is NOT true about default flush operation in Hibernate?

Hibernate flushes by default before some queries

Hibernate flushes by default when session.flush() is executed

Hibernate flushes by default when commit() is executed

Hibernate NEVER flushes by default

Answer

Correct Answer: Hibernate NEVER flushes by default

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52. Which one of the following statements is NOT true about comparison operator in HQL?

You can use = NULL to test whether the value is null

The HQL where clause supports arithmetic expressions

The where clause is a logical expression evaluating to true false or null

The "like" operator allows wildcard(%) searches

Answer

Correct Answer: You can use = NULL to test whether the value is null

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53. Which one of the following statement is NOT true about Hibernate's Query interface?

If the query returns more than result for the uniqueResult() method, the first one will be returned.

Both the createQuery() and createSQLQuery() method of Session interface can return a Query instance

You can paging the query result by using setFirstResult() and setMaxResult() method

You can use method chaining (methods return receiving object instead of void) with Query interface

Answer

Correct Answer: If the query returns more than result for the uniqueResult() method, the first one will be returned.

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54. Which of the following is the FIRST Hibernate object that is created in any Hibernate application?

Configuration

Transaction

Session

SessionFactory

Answer

Correct Answer: Configuration

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55. Which one of the following statements is NOT true about persistence annotations?

The @Table annotation can be used to specify mapping database schema name

The @Column annotations is used to specify the column name of the foreign key

The @Entity annotation indicates that the class is mapped to a table in database

The @Id annotation indicates the field is the primary key for the entity

Answer

Correct Answer: The @Column annotations is used to specify the column name of the foreign key

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56. Which of the following is NOT true about Session and Transaction scope in Hibernate?

Multiple instances of SessionFactory are created, usually on application startup, from a Configuration instance

A Session is an inexpensive, non-threadsafe object that should be used once and then discarded for: a single request, a conversation or a single unit of work

In order to reduce lock contention in the database, a database transaction has to be as short as possible

A SessionFactory is an expensive-to-create, threadsafe object, intended to be shared by all application threads

Answer

Correct Answer: Multiple instances of SessionFactory are created, usually on application startup, from a Configuration instance

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57. Hibernate offers an implementation of which specification?

ORM

JDBC

JMS

JPA

Answer

Correct Answer: JPA

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58. Which of the following is NOT a type of hibernate cache?

First Level Cache

Application layer level cache

Transaction layer level cache

SQL cache

Answer

Correct Answer: SQL cache

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59. Which one of the following statements is NOT true about named queries?

The named query must be HQL strings. Native SQL is not supported in named query

The getNamedQuery() method obtains a query instance of named query

Named queries are precompiled when session factory is created

Named queries allow externalizing query strings to the mapping metadata

Answer

Correct Answer: The named query must be HQL strings. Native SQL is not supported in named query

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60. Which one of the following statements is NOT true about ordering query result?

You can use asc and desc to specify ascending and descending order

You cannot order query results by more than one properties

The default ordering is ascending

HQL provides an ORDER BY clause for ordering query result

Answer

Correct Answer: You cannot order query results by more than one properties

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61. Which one of the following statements is true about the instance states?

Detached instants can be made persistent by calling saveOrUpdate()

Transient instants can be made persistent by calling delete()

Transient instants are previously persistent and associated with an unique session

Persistent instants can be made transient by calling update()

Answer

Correct Answer: Detached instants can be made persistent by calling saveOrUpdate()

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62. Which of the following is NOT a valid value for 'hbm2ddl.auto' property in hibernate configuration?

validate

truncate

create

update

Answer

Correct Answer: truncate

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

Transaction

Session

TransactionFactory

ConnectionProvider

Answer

Correct Answer: Session

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64. Which of the following elements is used to declare the persistent class in Hibernate configuration file?

<session-factory>

<hibernate-configuration>

Answer

Correct Answer: <mapping>

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65. Which one of the following statement is NOT true about SessionFactory?

You can use SessionFactory to create Session instance

SessionFactory is not lightweight and is expensive to create

One SessionFactory can manage more than one database

The SessionFactory caches generated SQL statements and other mapping meta data that Hibernate uses at runtime

Answer

Correct Answer: One SessionFactory can manage more than one database

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66. Which one of the following statements is true about detached instance?

An instance will be detached after it gets retrieved from the database by the execution of query.

Changes made to the detached instance are still guaranteed to synchronize with the database.

A persistent instance will become detached after the session is closed.

Hibernate does NOT allow you to re-associate detached instances with a new persistence manager.

Answer

Correct Answer: A persistent instance will become detached after the session is closed.

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67. Which of the following are valid Hibernate interceptors?

Session-scoped

Session-scoped but NOT SessionFactory-scoped

Both Session-scoped and SessionFactory-scoped

SessionFactory-scoped

Answer

Correct Answer: Both Session-scoped and SessionFactory-scoped

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68. Which of the following property needs to be defined to activate second-level caching?

transactionManager

hibernate-configuration

sessionFactory

cache.provider_class

Answer

Correct Answer: cache.provider_class

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69. Which of the following property makes hibernate to generate SQL as per the chosen database?

dialect

session

transaction

driver_class

Answer

Correct Answer: dialect

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70. Which of the following is a VALID key component of Hibernate Configuration?

Both database connection and class mapping setup

Class mapping setup but NOT database connection

Database connection but NOT class mapping setup

SessionFactory but NEITHER database connection NOR class mapping setup

Answer

Correct Answer: Both database connection and class mapping setup

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71. Which of the following correctly describes Hibernate Envers?

Facilitates auditing of Hibernate mappings, which extend JPA, like custom types and collections/maps of "simple" types (Strings, Integers, etc.)

Facilitates auditing of all mappings defined by the JPA specification

Facilitates querying historical data

All

Answer

Correct Answer: All

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72. The ____ element is used to link data to the database.

<HTML>

<JAVA>

<XML>

Answer

Correct Answer: <property>

Note: This Question is unanswered, help us to find answer for this one

73. Which of the followings might be able to solve N+1 problem?

add @Fetch annotation and specify a FetchMode of JOIN

add @Fetch annotation and specify a FetchMode of SUBSELECT

use LEFT JOIN FETH clause on the HQL

All of these

Answer

Correct Answer: All of these

Note: This Question is unanswered, help us to find answer for this one

74. The configuration object class is used to create a(n) ____?

SessionFactory

Rational Database

ArrayList

VariableRepository

Answer

Correct Answer: SessionFactory

Note: This Question is unanswered, help us to find answer for this one

75. A/an ______ is a primitive data type.

Variable

OOP

SQL

Integer

Answer

Correct Answer: Integer

Note: This Question is unanswered, help us to find answer for this one

76. A _______ represents a measure of work done in the database.

sproc

UDF

transaction

table

Answer

Correct Answer: transaction

Note: This Question is unanswered, help us to find answer for this one

77. Databases represent data in a ____ format.

tabular

delimited

reformatted

delayed

Answer

Correct Answer: tabular

Note: This Question is unanswered, help us to find answer for this one

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

xpath

XML

PL-SQL

XSLY

Answer

Correct Answer: XML

Note: This Question is unanswered, help us to find answer for this one

79. The reason for Hibernate is because their is a mismatch or impedance between the object model and the ____?

rational database

revised database

relational database

redundant database

Answer

Correct Answer: relational database

Note: This Question is unanswered, help us to find answer for this one

80. An ORM solution should consist of which of the following functions:

Specifying queries that refer to classes and properties of classes

Performing basic CRUD operations on objects of persistent classes

All of these

Specifying mapping metadata

Answer

Correct Answer: All of these

Note: This Question is unanswered, help us to find answer for this one

81. Which of the following is TRUE about Hibernate Search?

Hibernate Search works well in clustered mode

Hibernate Search provides synchronous and asynchronous index updates

Hibernate Search works well in non-clustered mode

All

Answer

Correct Answer: All

Note: This Question is unanswered, help us to find answer for this one

82. SessionFactory is _____.

delayed

self-orienting

thread safe

lousy

Answer

Correct Answer: thread safe

Note: This Question is unanswered, help us to find answer for this one

83. If Hibernate does not commit the transaction it can _______.

zip it up

backflip

rollback

fallback

Answer

Correct Answer: rollback

Note: This Question is unanswered, help us to find answer for this one

84. Hibernate is a high performance ORM. ORM stands for?

object redundant marker

object real maker

object relational marker

object relational mapping

Answer

Correct Answer: object relational mapping

Note: This Question is unanswered, help us to find answer for this one

85. Java is a/an _____ language

client

tough

javascript

Object-Oriented

Answer

Correct Answer: Object-Oriented

Note: This Question is unanswered, help us to find answer for this one

86. What instructs Hibernate how to map the classes to the database?

A variable

The Declare statement

xpath mapping file

XML mapping file

Answer

Correct Answer: XML mapping file

Note: This Question is unanswered, help us to find answer for this one

87. The createhibernate.cfg.xml is a/an ____ configuration file.

MXL

LMX

XXML

XML

Answer

Correct Answer: XML

Note: This Question is unanswered, help us to find answer for this one

88. Which of the following shortcomings are addressed by Hibernate Search?

The API mismatch

The structural mismatch

The duplication mismatch

All

Answer

Correct Answer: All

Note: This Question is unanswered, help us to find answer for this one

89. Which is true:

Session.Cloak()

Session.Close();

Session.Close

Session.Cloak

Answer

Correct Answer: Session.Close();

Note: This Question is unanswered, help us to find answer for this one

90. A persistent framework is a(n) ____ service that stores and gets objects into a database.

modular

open

ORM

Answer

Correct Answer: ORM

Note: This Question is unanswered, help us to find answer for this one

91. Which of the following XML elements is true for Hibernate?

<hibernate-hibernate>

<hibernate-java-java>

<hibernate-mapping>

<hibernate-tabular>

Answer

Correct Answer: <hibernate-mapping>

Note: This Question is unanswered, help us to find answer for this one

92. Which of the following statements are true about Hibernate catching:

The first level caching is provided by the EntityManager

The first level caching is limited to a particular user or request

Hibernate provides 2 levels of caching

All of these

Answer

Correct Answer: All of these

Note: This Question is unanswered, help us to find answer for this one

93. Hibernate will assume an instance is an unsaved transient instance if:

The identifier property (if it exists) is null

All of these

You supply an unsaved-value in the mapping document for the class, and the value of the identifier property matches

The version property (if it exists) is null

Answer

Correct Answer: All of these

Note: This Question is unanswered, help us to find answer for this one

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