Week 4-Petrie's Electronics Cases Ch 7_CH

Week 4-Petrie's Electronics Cases Ch 7_CH

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Petrie's Electronics Case, Chapter 7, Questions 2, 3, and 4 2. Again, review the DFDs you developed for the Petrie’s Electronics case (or those given to you by your instructor). Use these DFDs to identify the attributes of each of the six entities listed in this case plus any additional entities identified in your answer to Question 1. Write an unambiguous definition for each attribute. Then, redraw Figure 7-1 by placing the six (and additional) entities in this case on the diagram along with their associated attributes COUPON : COUPON_ID- automatically created from system to get tracking and match ups and COUPON_CODE- Discount offered SERIVCES : SERVICE_ID- Automatically created from the system to get tracking and match ups and STORE_JOB- Provide service PROMOTION: PROMOTION_ID- automatically created from the system to get tracking and match ups and PROMOTION_CODE- determines what type of promotion and amount CUSTOMER : CUSTOMER_ID- Automatically created from the system to get
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