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1.
Consider a persistence application with the following orm.xml:
What will be the effect of the above orm.xml?
What will be the effect of the above orm.xml?
2.
An application uses an application-managed entity manager. Which of the following is NOT true?
3.
An application that uses container-managed transaction demarcation creates a query within an active transaction and receives a QueryTimeoutException. Which of
those scenarios describes what happens to the active transaction?
those scenarios describes what happens to the active transaction?
4.
The developer has defined the following entity class office:
Which of the following attributes will be in corresponding generated static metamodel class for the rooms' field?
@Entity
public class Office {
@Id
private int id;
private String name;
@OneToMany
private List
}
rooms;
public class Office {
@Id
private int id;
private String name;
@OneToMany
private List
}
rooms;
5.
Given two entities with many-to-many bidirectional association between them:
What set of annotations correctly defines the association?
@Entity public class Employee {
Collection projects;
// more code here
}
and
@Entity public class Project {
Set
}
// more code here
emps;
Collection projects;
// more code here
}
and
@Entity public class Project {
Set
}
// more code here
emps;
6.
An application wants to utilize side effects of cascading entity manager operations to related entities.
Which statement is correct?
Which statement is correct?
7.
An entity person is mapped to a table PERSON and has a collection-valued persistence field otherUsedNames that stores names used by a person. The
otherUsedNames field is mapped to a separate table called NAMES. Which code fragment correctly defines such field?
otherUsedNames field is mapped to a separate table called NAMES. Which code fragment correctly defines such field?
8.
Which statement is true about the @OrderColumn annotation?
9.
Which cascade option can be specified in a mapping descriptor so that it applies to all relationships in a persistent e unit?
10.
The developer wants to define a unidirectional relationship from the customer entity to the order entity and map this relationship using a foreign key mapping
strategy. Which one of the pairs of classes below correctly achieves this task?
strategy. Which one of the pairs of classes below correctly achieves this task?