Object-oriented analysis (OOA) is a semiformal specification technique for the object-oriented paradigm. Object-oriented analysis consists of three steps. The first step is(1). It determines how the various results are computed by the product and presents this information in the form of a (2) and associated scenarios. The second is (3) , which determines the classes and their attributes, then determines the interrelationships and interaction among the classes. The last step is (4) , which determines the actions performed by or to each class or subclass and presents this information in the form of (5) .
The Unified Modeling Language is a standard graphical language for modeling object-oriented software()can show the behavior of systems in terms of how objects interact with each other.
A dirty fuel oil filter is can be detected by ()
Ⅰ.fuel oil analysis
Ⅱ.observing the pressure drop across the filter
The receiving activities conduct analyses of the requirements with the requirements provider to ensure that a compatible, shared understanding is reached on the meaning of the requirements. The result ofthis analysis and dialog is an()set of requirements.
()is a property of object-oriented software by which an abstract operation may be performed in different ways in different classes.
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