Ch01_Environment - Chapter 1 The Object-Oriented Systems Development Environment Jun Shu [email protected] Dept of SC&IS Penn State 1 Chapter

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1 Chapter 1: The Object-Oriented Systems Development Environment Jun Shu, [email protected] 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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This note was uploaded on 04/16/2008 for the course MIS 432 taught by Professor Junshu during the Spring '08 term at Pennsylvania State University, University Park.

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Ch01_Environment - Chapter 1 The Object-Oriented Systems Development Environment Jun Shu [email protected] Dept of SC&IS Penn State 1 Chapter

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