Uml Advantages And Disadvantages 1ro6p

• Name the advantage of UML .Explain why it is an advantage. Advantages of UML: UML is a most useful method of visualization and documenting software systems design.UML uses object oriented design concepts and it is independent of specific programming language. Unified Modeling Language is a popular technique for documenting and modeling system .the UML uses set of symbols to represent graphically the various components and relation ships with in the system and UML can be used for business processing modeling and requirements modeling ,it mainly is used to object oriented system analysis and to develop the object models. Real time UML, this method is the application of UML to design of real-time system. It represents the system with structural and behavioral language models and those deg modeling include the architectural mechanical and detailed design .Object oriented methodologies have employed in the construction of the real time system. Example:

• Name a disadvantage of using UML .Explain why it is a disadvantage. Disadvantages of UML: •

Still no specification for modeling of interfaces.

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Business rule specification – a group exists for this within the OMG, so we should see something in UML

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Poor for distributed systems – no way to formally specify serialization and object persistence.

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Example – no way to specify that an object resides on a server process and shared among instances of a running process.

UML’s main strength seems to be in its for the development process. This seems to be of limited interest to SoftFMEA where networks are concerned, but might it be more valuable when considering software based components? If our interest is confined to a system’s logical architecture and behaviour we might only use the state and interaction diagrams, where there are plenty of alternatives. UML’s usefulness seems therefore to depend on whether it fits in well with an existing development process. Its main weakness, from our point of view, is its lack of formality. Clearly to build an executable model we need a formal language. Therefore we can presumably only use UML if we underpin it with some formal semantics, such as those provided by a proprietary tool, or possibly SDL. This leaves the question of why we would want to do this. There are two possible reasons. One is that UML is used in a development process and we wish to use it for our stage of this process for consistency and to avoid the translating work into a new language. The other related reason is simply that if s are familiar with UML it might be worth keeping it, as a “front end” to a formal language.