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ch01_Environment - Chapter 1 The Object-Oriented Systems...

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1 Chapter 1: The Object-Oriented Systems Development Environment Jun Shu, [email protected] Dept. of SC&IS Penn State 2 Chapter 1 Chapter Objectives After studying this chapter you should be able to: Define information systems analysis and design. Explain the basics about systems. Describe the information systems development cycle (SDC). Describe TPS, MIS, and DSS. Describe the role of systems analyst. Recount the evolution of system development methodologies. 3 Chapter 1 Roadmap for this chapter People (who) Build (how) Information Systems (what)
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4 Chapter 1 What Is Systems Analysis and Design? The process of implementing and operating an information system Requires knowledge of: Organization’s objectives, structure, processes Information technology opportunities and constraints 5 The “What” Part 6 Chapter 1 What Is a System? A group of interrelated procedures used for a business function, with an identifiable boundary, working together for some purpose.
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7 Chapter 1 8 Chapter 1 Characteristics of Systems Boundary – divides system from environment Inputs – data from environment to system Output – data from system to environment Components – subparts of systems operating independently (objects) Interrelationships – associations between components of a system Interfaces – mechanism for interacting with a component 9 Chapter 1 Important System Concepts Decomposition – breaking down a
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  • Spring '08
  • JUNSHU
  • Information Systems Analysis, Systems Development Life Cycle, systems analyst, System Development Methodologies

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