The Unified Modeling Languag User Guide Southern …统一建模语言的用户指南南….pptVIP

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The Unified Modeling Languag User Guide Southern …统一建模语言的用户指南南….ppt

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The Unified Modeling Languag User Guide Southern …统一建模语言的用户指南南…

* UML Distilled 3ebyMartin FowlerChapter 1Introduction to UML * What is the UML? “The Unified Modeling Language is a family of graphical notations, backed by a single meta-model, that help in describing and designing software systems, particularly software systems built using the object-oriented style.” UML first appeared in 1997 UML is standardized. Its content is controlled by the Object Management Group (OMG), a consortium of companies. * What is the UML? Unified UML combined the best from object-oriented software modeling methodologies that were in existence during the early 1990’s. Grady Booch, James Rumbaugh, and Ivor Jacobson are the primary contributors to UML. * What is the UML? Modeling Used to present a simplified view of reality in order to facilitate the design and implementation of object-oriented software systems. All creative disciplines use some form of modeling as part of the creative process. UML is a language for documenting design Provides a record of what has been built. Useful for bringing new programmers up to speed. * What is the UML? Language UML is primarily a graphical language that follows a precise syntax. UML 2 is the most recent version UML is standardized. Its content is controlled by the Object Management Group (OMG), a consortium of companies. * How We Got to the UML OO modeling languages made their appearance in the late 70’s. Smalltalk was the first widely used OO language. As the usefulness of OO programming became undeniable, more OO modeling languages began to appear. By the start of the 90’s there was a flood of modeling languages, each with its own strengths and weaknesses. * How We Got to the UML In 1994 the UML effort officially began as a collaborative effort between Booch and Rumbaugh. Jacobson was soon after included in the effort. The goal of UML is to be a comprehensive modeling language (all things to all people) that will facilitate communication between all members of the development effort. * UML D