Java Persistence API: Mapping & Configuring Relationships

Overview/Description
Expected Duration
Lesson Objectives
Course Number
Expertise Level

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Overview/Description

In this course, you'll explore the various kinds of relationships that you might want to express using JPA annotations and how these relationships map to relational table design. You'll examine unidirectional as well as bidirectional one-to-one, one-to-many, many-to-one, and many-to-many relationships.

Once you're done with this course, you'll be able to model and express real-world relationships between your entities using JPA annotations. Finally, you'll learn how to finely manipulate how you want these relationships configured using underlying database tables.

Expected Duration (hours)
2.0

Lesson Objectives

Java Persistence API: Mapping & Configuring Relationships

discover the key concepts covered in this course

set up a one-to-one mapping between entities

configure join columns for one-to-one mapping

set up a bidirectional one-to-one mapping between entities

configure one-to-one-mapping with a shared primary key

configure one-to-one mapping with a join table

set up a one-to-many unidirectional mapping

configure a one-to-many mapping with a join table

configure eager loading of entities on the many side

configure lazy loading of entities on the many side

configure one-to-many mapping with join columns

retrieve many entities in order of specific attributes

persist entities in a certain order

set up a many-to-one unidirectional mapping

configure a many-to-one mapping with multiple join columns

configure a many-to-one mapping with a join table

set up a one-to-many, many-to-one bidirectional mapping

retrieve entities mapped in both directions

configure the owning side and owned side in mappings

set up a many-to-many bidirectional mapping

summarize the key concepts covered in this course

Course Number:
it_jmjpehdj_03_enus

Expertise Level
Expert