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Persistence frameworks Flashcards | StudBud
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Persistence frameworks
Persistence frameworks
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Imported from external platform
Flashcards
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Questions
15
Answers
1
How is the realm called which contains the Entities synchronized with the database?
persistence unit
entity context
entity unit
persistence context
2
Which is the main configuration file for JPA frameworks?
persistence.xml
pom.xml
pom.xaml
persistence.fxml
3
What does ORM stand for?
object relational mapping
object rendering model
object relational model
object ratio map
4
In a database system you need an associative table for implementing a N:M relationship
True
False
5
What does JPQL stand for?
Java property quick link
Java persistence query language
Java persistence quantum level
Java persistence quick link
6
What does JPA stand for?
Java public API
Java persistence access
Java properties access
Java persistence API
7
By which means are 1:N relations implemented in an object model?
inheritance
a foreign key property
they cannot be implemented
a list of references
8
What ist the purpose of a persistence framework?
enabling efficient access to databases
enabling efficient input and output
enabling efficient programming of graphical user interfaces
enabling efficient access to CSV-files
9
An entity framework needs a database driver.
False
True
10
By which means are 1:N relations implemented in a relational database?
a primary key
an integer column
a varchar column
a foreign key
11
Where is the persistence unit name defined?
in persistence.xml
in the main method
in module-info.java
in pom.xml
12
In an object model need an associative class for implementing a N:M relationship
False
True
13
If all the entities related to a selected entity are retrieved immediately this is called ...
quick fetching
eager fetching
simultaneous fetching
lazy fetching
14
What is the main difference between SQL and JPQL?
entire objects are selected
performance is better
statements can be parameterized
it's only a different syntax for the same concepts
15
JPA frameworks use ... to specify the object relational mapping
Java Lists
Java Comments
Java Collections
Java Annotations
