Years ago not so many people knew, there would be a revolution in enterprise communication and transactions. Major business establishments run mainframe computers ( usually the size of a biggest toilet ) for their application needs, but with lots of hecks and problems. It all started with a programming language JAVA, which changed the way people wrote applications. Java broke the monolithic architecture of the ester years . It took data , presentation and the logic to different tiers and made application programming ....aaa...fun !... Now java has gone to an extent of breaking the application logic into numerous services.
" code reuse to service reuse "
So how to transfer data between the logic tier (for processing) data tier ( for storing ) presentation tier ( for displaying ) ? So there comes our App Server which takes care for communications and transactions between tiers.
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