... Analysis and Design. The creators of UML, who include Grady Booch, Ivar Jacobson, and James Rumbaugh, suggest that all object-oriented systems development projects must be use-case driven, architecture centric, and iterative and incremental. Any modern object-oriented approach to information systems development must be use-case driven. This means that the behavior of the system is primarily modeled with use cases. Use cases, in turn, are models that describe the interactions users make with the system to perform some function. These models lay the groundwork for the system, providing details to the development team. Use cases also simplify the analysis of a system, in that they only focus on one specific function at a time. Instead of viewing the system as a whole, it is broken down into simpler processes, which are much easier to manage. Another key to object-oriented systems analysis and design is the architecture centric approach. With this approach, "the underlying ...

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