CNIT 18000 Chapter Notes - Chapter 6: Object Model, The Strongest, Use Case Diagram
14 Nov 2016
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Document Summary
Object-oriented analysis is a popular approach that sees a system from the viewpoint of the objects themselves as they function and interact. The end product of o-o analysis is an object model, which represents the information system in terms of objects and o-o concepts. An object represents a person, a place, an event, or a transaction that is significant to the information system. An object has certain attributes, which are characteristics that describe the object. An object also has methods, which are tasks or functions that the object performs when it receives a message, or command, to do so. An instance is a specific member of a class. Systems analysts define an object"s attributes during the systems design process. In an o-o system, object can inherit, or acquire, certain attributes from other objects. Objects had a specific attribute called a state. The state of an object is an adjective that describes the object"s current status.
