December 2014
Intermediate to advanced
434 pages
9h 48m
English
In the earlier chapters, we discussed Java EE, combining several technologies such as CDI. The examples so far, however, are based on a false assumption that all the information can be stored in memory. In this chapter, we will show how to use a persistent data store for our application in the form of a standard relational database.
The Enterprise JavaBeans (EJB) 3.2 specification includes a reference to a persistence specification called the Java Persistence API (JPA). It is an API to create, remove, and query Java objects called entities that can be used within both a compliant EJB 3.x container and a standard Java SE environment. In Java EE 7, it has been updated to Version 2.1. You can check out the ...
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