Java Persistence with Hibernate

7.4. Summary

In this chapter, you learned how to map more complex entity associations. Many of the techniques we've shown are rarely needed and may be unnecessary if you can simplify the relationships between your classes. In particular, many-to-many entity associations are often best represented as two one-to-many associations to an intermediate entity class, or with a collection of components.

Table 7.1 shows a summary you can use to compare native Hibernate features and Java Persistence.

Table 7-1. Hibernate and JPA comparison chart for chapter 7

Hibernate Core	Java Persistence and EJB 3.0
Hibernate supports key generation for shared primary key one-to-one association mappings.	Standardized one-to-one mapping is supported. Automatic shared primary ...