Data and Process Modeling and Object Modeling

Overview

With requirements defined, a system analyst focuses on how system data is transformed into useful information. The deliverable of data and process modeling is a logical model. A logical model shows what the system must do, regardless of how it will be implemented physically. Later, in the systems design phase, a physical model is built that describes how the system will be constructed. Data and process modeling involves three main tools:

In contrast, object-oriented (O-O) analysis describes an information system by identifying things called objects. An object represents a real person, a place, an event, or a transaction. For example, when a patient makes an appointment to see a doctor, the patient is an object, the doctor is an object, and the appointment itself is an object.

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. Object-oriented analysis provides us with another way to view and model system requirements.

Objectives

At the end of this week, you will be able to:

Learning Activities

  1. Read Module 5: Data and Process Modeling.
  2. Participate in Module 5 SCR Case Simulation: Data and Process Modeling.
  3. Read Module 6: Object Modeling.
  4. Participate in Module 6 SCR Case Simulation: Object Modeling.

Assignments

  1. Take the Unit 5 Test.
  2. Take the Unit 6 Test.
  3. Complete System Requirements Document - Project #1.