Visual Modeling with Rational Rose 2002 and UML

Designing Attributes and Operations

During analysis, it was sufficient to specify only attribute and operations names. During design, data types and initial values must be specified for attributes and operations signatures must be supplied. A data type for an attribute may be a language-supplied type such as an integer or it may be a more complex type like a String from a class library. If the attribute must be initialized to a specific value when an object of the class is created, this information is added to the class. In methodology terms, the operation signature includes the parameter list and the return class. Again, parameters and return classes must be assigned a data type. Access control—public, protected, and private—must be set for ...