The Rational Unified Process (RUP) is a software engineering process, which captures many of best practices in modern software development. The notions of （ ） and scenarios have been proven to be an excellent way to capture function requirements. RUP can be described in two dimensions – time and content. In the time dimension, the software lifecycle is broken into cycles. Each cycle is divided into four consecutive （ ） which is concluded with a well-defined （ ） and can be further broken down into （ ） – a complete development loop resulting in a release of an executable product, a subset of the final product under development, which grows incrementally to become the final system. The content structure refers to the disciplines, which group （ ） logically by nature.
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