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Devry 340 mgmt petrie electronics Using the guidelines from this chapter and other sources, evaluate the usability of the page design depicted in PE Figure 8-1. 2. Chapter 8 encourages the design of a help system early in the design of the human interface. How would you incorporate help into the interface as shown in PE Figure 8-1? 3. Describe how cookie crumbs could be used in this system. Are cookie crumbs a desirable navigation aid for this system? Why or why not? 4. The page design depicted in PE Figure 8-1 links to an Order History page. Sketch a similar layout for the Order History page, following guidelines from Chapter 8. 5. Describe how the use of template-based HTML might be leveraged in the design of the “No Customer Escapes” system. In the questions associated with the Petrie’s Electronics case at the end of Chapter 7, you were asked to modify the E-R diagram given in PE Figure 7-1 to include any other entities and the attributes you identified from the Petrie’s case. Review your answers to these questions, and add any additional needed relations to the document in PE Figure 9-1. 2. Study your answer to Question 1. Verify that the relations you say represent the Petrie’s Electronics database are in third normal form. If they are, explain why. If they are not, change them so that they are. 3. The E-R diagram you developed in questions in the Petrie’s Electronics case at the end of Chapter 7 should have shown minimum cardinalities on both ends of each relationship. Are minimum cardinalities represented in some way in the relations in your answer to Question 2? If not, how are minimum cardinalities enforced in the database? 4. Using your answer to Question 2, select data types, formats, and lengths for each attribute of each relation. Use the data types and formats supported by Microsoft Access. What data type should be used for nonintelligent primary keys? 5. Complete all table and field definitions for the Petrie’s Electronics case database using Microsoft Access. Besides the decisions you have made in answers to the preceding questions, fill in all other field definition parameters for each field of each table. 6. The one decision for a relational database that usually influences efficiency the most is index definition. What indexes do you recommend for this database? Justify your selection of each index.