1Z0-898 Real Exam Questions

Which EntityManager API will lock entity x with a pessimistic lock?

An application has two entities, Department and Employee, and there is a one-to-many relationship between them. The application has the following query: SELECT d FROM Department d LEFT JOIN FETCH d. employees WHERE d.name = : name After receiving the results of the query, the application accesses the returned department's Employee entities stored in the Department.employees collection-valued attribute. All caching has been turned off in the application. Which statement is true?

The developer has modeled student interests as a set <String>: @Entity public class Student { @Id int student Id; string name; @ElementaryCollection Set <String> Interests; . . . } The developer wants the values of this set to be stored using a column named student_intersets. Select the item below that accomplishes this task:

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?

A session bean business method invokes UserTransaction.setRollbackonly and receives an IllegalStateException. Under which circumstance can this happen?