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CS605 - Software Engineering II - Lecture Handout 43

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Moving the amount calculation

As I look at amountOf, I can see that it uses information from the rental, but does not use information from the customer. This method is thus on the wrong object, it should be moved to the rental. To move a method you first copy the code over to rental, adjust it to fit in its new home and compile.

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CS605 - Software Engineering II - Lecture Handout 38

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Legacy systems

A system is considered to be a legacy system if it has been in operation for many years. A legacy system has many components. These include business processes, business rules, application software, application data, support software, and system hardware. The relationship among these components is shown in the following diagram.

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