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Java 2 Platform, Enterprise Edition (J2EE)
The Java 2 Platform, Enterprise Edition (J2EE) defines the standard for developing multitier enterprise
applications. The J2EE platform simplifies enterprise applications by basing them on standardized, modular components, by
providing a complete set of services to those components, and by handling many details of application behavior automatically,
without complex programming.
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OMG Model Driven Architecture(MDA)
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The MDA is a new way of writing specifications and developing applications, based on a platform-independent
model (PIM). A complete MDA specification consists of a definitive platform-independent base UML® model, plus one or more
platform-specific models (PSM) and interface definition sets, each describing how the base model is implemented on a different
middleware platform. A complete MDA application consists of a definitive PIM, plus one or more PSMs and complete implementations,
one on each platform that the application developer decides to support.
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