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Java™ for COBOL Programmers, Third Edition by John C. Byrne

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15 Introduction to Enterprise JavaBeans

Enterprise JavaBeans (EJBs) technology is one aspect of the JEE specification that also includes specifications for servlets, messaging, Java Server Pages, and Java Messaging and other components.

EJBs appear to be more difficult than they really should be. The apparent complexity of the infrastructure of EJBs carries with it a big tradeoff. The JEE architecture handles much of the scaling and integrity issues required for robust enterprise code. This includes database connection pooling and transaction services, ...

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