Object-oriented assay and architecture (OOAD) is a software engineering access that models a arrangement as a accumulation of interacting objects. Each article represents some article of absorption in the arrangement getting modeled, and is characterised by its class, its accompaniment (data elements), and its behavior. Various models can be created to appearance the changeless structure, activating behavior, and run-time deployment of these accommodating objects. There are a amount of altered notations for apery these models, such as the Unified Modeling Language (UML).
Object-oriented assay (OOA) applies object-modeling techniques to assay the anatomic requirements for a system. Object-oriented architecture (OOD) elaborates the assay models to aftermath accomplishing specifications. OOA focuses on what the arrangement does, OOD on how the arrangement does it.
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