Figure 9-3. Hibernate's Dependency Hierarchy tab
As you can see in Figure 9-3, the hibernate-entitymanager module requires the hibernate-core
module and in turn requires the hibernate-commons-annotations module, and so on. So, you will have a
quick understanding of what is being included in your project.
However, for a production application, you may still need to fine-tune the pom.xml file to make sure
that only the libraries and their correct versions were included.
Sample Data Model for Example Code
In Chapter 8, you saw a simple data model for demonstrating the code samples. In this chapter, in order
to demonstrate some of the more complicate relationships, we will extend the data model a bit. Figure
9-4 shows the data model that will be used in this chapter.
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