... system. Several object-oriented software development methods have been proposed and are continuously refined. Many object-oriented CASE tools have been developed to support the methods. Object-oriented techniques promise to simplify and speed up the development of software systems. The start of an object-oriented development process, presented in almost all methods, is the identification of the entities of a problem that are then, formalized in objects and attributes. The misunderstanding of the system components can grow from phase to phase and can lead to either an inappropriate computer solution or to difficult maintenance. Object-oriented software is all about objects. An object is also known as a "black box" that can both send and take messages. A black box contains code and data. Usually code and data are kept separate. For example, in the C language, units of code are called functions, while units of data are called structures. Functions and structures are ...

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