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So let's start by seeing how these activities and principles
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are reflected in the key features of the Rational Unified
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Process. First of all, the Rational Unified Process is a
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software process model. So if you recall our introductory lessons,
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that means two main things. The first one is that
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it defines an order of phases that have to be
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followed in the software process. And the second thing is
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that it also prescribes transition criteria, so when to go
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from one phase to the next. The second key
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feature of RUP is that it is component based. And
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also in this case, this implies two main things.
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The first one is that a software system is defined
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and built as a set of software components. So
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software components are the building blocks of our software system.
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And the second one is that there must be well-defined
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interfaces between these components, interfaces
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through which these components communicate.
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In addition, the Rational Unified Process is
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tightly related to UML. And in particular, it
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relies extensively on UML for its notation, and
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with respect to its basic principles. Finally, the
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three main distinguishing aspects of the Rational Unified
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Process are that it is use-case driven, architecture-centric
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and iterative and incremental. So let's now look
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in more detail at these three distinguishing aspects,
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and we're going to look at each one of them individually.
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