Hibernate Set 6

Hibernate Query Language (HQL) is an object-oriented query language. ✘ HQL works with persistent objects and their properties instead of operating on tables and columns. ✘ Both of these ✘ None of these ✔

Hibernate maps Java classes to database tables using XML files without writing any code. ✘ Hibernate provides simple APIs for storing and retrieving Java objects directly to and from the database. ✘ Hibernate abstracts unfamiliar SQL types and works around familiar Java objects. ✘ All of these ✔

The SessionFactory is a heavyweight object. ✘ The SessionFactory object is created during the application startup and stored for later use. ✘ A single SessionFactory object per database is required which is created using a separate configuration file. ✘ All of these ✔

Session.createQuery ✘ Session.getcreateQuery ✘ Session.addcreateQuery ✘ None of these ✔

Dselect fetching ✘ Subselect fetching ✘ Select fetching ✘ Join fetching ✔

The element maps the unique ID attribute of the class to the primary key of the database table. ✘ The name attribute of the element refers to the property in the class. ✘ The column attribute of the element refers to the column in the database table. ✘ All of these ✔

First-level caching ✘ ✘ @Column ✘ None of these ✔

The element which is within the ID element is used to automatically generate the primary key values. ✘ The class attribute of the generator element is set to native that allows Hibernate to pick up either identity, sequence or hilo algorithm to create the primary key depending upon the capabilities of the underlying database. ✘ Both of these ✘ None of these ✔

create Configuration ✘ BuildSessionFactory ✘ Session ✘ All of these ✔

First level cache ✘ Second level cache ✘ First and second level caches ✘ Third level cache ✔