Many of the attributes of a class are found in the problem statement, the set of system requirements, and the flow of events documentation. They may also be discovered when supplying the definition of a class. Finally, domain expertise is also a good source of attributes for a class. For example, the requirements state that information such as course name, description, and number of credit hours is available in the Course Catalog for a semester. This implies that name, description, and number of credit hours are attributes of the Course class.
CREATING ATTRIBUTES IN RATIONAL ROSE
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