Introduction to Entity Beans CHAPTER 6 One of (Sri lanka web server)
Introduction to Entity Beans CHAPTER 6 One of the key benefits of EJB is that it gives you the power to create entity beans. Entity beans are persistent objects that you place in permanent storage. This means you can model your business s fundamental, underlying data as entity beans. In this chapter, we ll cover the basic concepts of persistence. We ll give you a definition of entity beans from a programmer s perspective. You ll learn the features that entity beans offer and entity bean programming concepts. This chapter is relatively theoretical, and it is meant to give you a solid foundation in entity bean programming concepts. Make sure you ve read and understood the previous chapters in this book; our discussion of entity beans will build on the knowledge you ve acquired so far. We ll use these concepts with hands-on code in later chapters. Persistence Concepts Because entity beans are persistent objects, our discussion begins with a quick look at popular ways to persist objects.
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