Chapter-7-HWK-Solutions

Chapter-7-HWK-Solutions - Systems Analysis and Design Sixth...

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Systems Analysis and Design, Sixth Edition Page 1 of 3 ANSWERS TO CHAPTER 7 CAPSTONE CASE : S OFT W EAR , L IMITED P360 1. Rick asked you to help him put together a brief progress update for Michael Jeremy and several other top managers. Specifically, Rick wants you to explain the concept of normalization without using a lot of technical jargon. Rick wants you to summarize the concept using plain English and simple examples. A good design will be significantly less expensive to maintain and help boost customer satisfaction. Although they probably are not interested in the details, managers should know that data must be organized in a special way to achieve these objectives. The process of organizing the data is called normalization. The normalization process creates specific requirements for data that produce better quality results, just as companies set standards for quality control objectives. First normal form is better than unnormalized data, second normal form is even better, and third normal form is what most businesses use in their day-to-day operations. Managers might ask for a specific example of how normalization works, and they should be able to respond with a relatively simple answer. In a properly designed record in third normal form, all nonkey fields depend on the key, the whole key, and nothing but the key. The following example demonstrates how this phrase would apply: Suppose you wanted to design a system to track your service reps and the customers assigned to them. You could set up a table with one record per service rep and with fields
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This note was uploaded on 11/22/2009 for the course CSE 1is taught by Professor Eric during the Three '09 term at La Trobe University.

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Chapter-7-HWK-Solutions - Systems Analysis and Design Sixth...

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