Case 4-A Object ModelingCase 4-A Object Modeling.docVIP

MILESTONE A – OBJECT MODELING Synopsis O bject-oriented analysis techniques are best suited to projects that will implement systems using emerging object technologies. The object-oriented approach is centered on a technique referred to as object modeling. The object-oriented approach to system development is based on the concept of objects that exist within a system’s environment. Objects are everywhere. Look around you. What are some of the objects present within your environment? Perhaps you see a door, a window, or the room itself. What about this book ( it is an object, and so is the very page you are reading. And of course, don’t forget about you. You are an object. Perhaps you also have a student workbook with you and there are other individuals in the room. You may also see phone, a chair, and perhaps a table. All of these objects represent objects that may be clearly visible within your immediate environment. In performing Object Oriented Analysis (OOA), like any other systems analysis method, the purpose is to gain a better understanding of the system and its functional requirements. In other words, OOA requires that we identify the objects, their data attributes, associated behavior, and relationships that support the required business system functionality. We perform object modeling to document the identified objects, the data and behavior they encapsulate, plus their relationships with other objects. In this milestone you will construct various object models used to communicate the scope and requirements of the project. First, you will create a context model. Second, you will perform use case modeling to document the business requirements and identify the necessary objects required by the system. Finally, you will construct a class structure diagram to graphically depict the object classes that make up the system as well as the objects’ relationships with each other. Objectives After completing this milestone, you should be able to: Construct a con