Question 1

What is the annotation used to indicate that a class is represented in the data base with a table?

Accepted Answer

@Entity

Answer

@Transient

Answer

@Table

Answer

@Persistent

Question 2

How do we define the name of the table wich will represent a class in the data base?

Accepted Answer

With the @Table annotation.

Answer

With the @Entity annotation

Answer

With the @Alias annotation

Answer

With the @Name annotation

Question 3

Which annotation has to be used in the class "Alumne" to define the relationship that we can see in the class diagram?

Accepted Answer

@ManyToMany

Answer

@OneToMany

Answer

@JoinTable

Answer

@ManyToOne

Question 4

What is the difference between @NamedQuery and @NamedQueries annotations?

Accepted Answer

@NamedQuery is used to define a single query to the database and @NamedQueries is used to group several queries defined with @NamedQuery.

Answer

@NamedQuery is used to define single result queries and @NamedQueries for multiple result ones.

Answer

@NamedQuery is used to define queries with a single name and @NamedQueries is used to define multiple names to each query.

Answer

@NamedQuery is used to define single field result queries and @NamedQueries for multiple field result ones.

Question 5

The four basic JPA persistence operations are...

Accepted Answer

persist(), merge(), remove() and createNamedQuery()

Answer

insert(), update(), delete() and select()

Answer

add(), set(), remove() and get()

Answer

insert(), modify(), remove() and query()

Question 6

What kind of query is the one we can see above if "id" is an attribute annotated as @Id?

Accepted Answer

A single result parametric query.

Answer

A multiple result parametric query.

Answer

A multiple result non-arametric query.

Answer

A single result non-parametric query.

Question 7

What is the language used to define object oriented queries in JPA?

Accepted Answer

JPQL

Answer

SQL

Answer

Java

Answer

EL

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