13 essentials of business information systems chapter

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Unformatted text preview: ormal division of labor • Used for building large, complex systems • Time consuming and expensive to use 11.13 Essentials of Business Information Systems Chapter 11 Building Information Systems Alternative Systems-Building Approaches The Traditional Systems Development Lifecycle The systems development lifecycle partitions systems development into formal stages, with each stage requiring completion before the next stage can begin. 11.14 Figure 11-3 Essentials of Business Information Systems Chapter 11 Building Information Systems Alternative Systems-Building Approaches Prototyping • Preliminary model built rapidly and inexpensively • Four-step process • Identify the user’s basic requirements • Develop an initial prototype • Use the prototype • Revise and enhance the prototype • Especially useful in designing a user interface 11.15 Essentials of Business Information Systems Chapter 11 Building Information Systems Alternative Systems-Building Approaches The Prototyping Process Figure 11-4 The process of developing a prototype consists of four steps. Because a prototype can be developed quickly and inexpensively, systems builders can go through several iterations, repeating steps 3 and 4, to refine and enhance the prototype before arriving at the final operational one. 11.16 Essentials of Business Information Systems Chapter 11 Building Information Systems Alternative Systems-Building Approaches End-User Development • End users create simple information systems with little or no assistance from technical spets • Use fourth-generation languages, graphics languages, and PC software tools to access data, create reports,...
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This document was uploaded on 02/11/2014.

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