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Daniel O'Connor

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Say you're writing an Enterprise JavaBean that represents a persistent object, such as a customer or a product. You have two choices for getting data (such as customer name and product number) from the bean to the database and back: You can let the bean's runtime environment ­ its container, in EJB speak ­ do the heavy lifting for you.... ....or you can provide the logic yourself along with your bean. It seems like an easy choice. Why write code when you don't need to? Frequently, in fact, container-managed persistence will be a good match for a project. However, if you want your bean to be portable across multiple EJB servers, or if you find that the container-managed persistence provided by your chosen EJB server is inadequate, you'll need to turn to bean-managed persistence. According to the current version of the Enterprise JavaBeans Specification (v1.1), a com... (more)