Topic1

Complete Problems 1-9 in the Problems section at the end of Chapter 1 in the textbook. (copies of the problem photos, attached below)

In a Word document, answer each question in at least one sentence.

1. How many records does the file contain? How many fields are there per record?

2. What problem would you encounter if you wanted to produce a listing by city? How would you solve this problem by altering the file structure?

3. If you wanted to produce a listing of the file contents by last name, area code, city, state, or zip code, how would you alter the file structure?

4. What data redundancies do you detect? How could those redundancies lead to anomalies?

5. Identify and discuss the serious data redundancy problems exhibited by the file structure shown in Figure P1.5.

6. Looking at the EMP_NAME and EMP_PHONE contents in Figure P1.5, what change(s) would you recommend?

7. Identify the various data sources in the file you examined in Problem 5.

8. Given your answer to Problem 7, what new files should you create to help eliminate the data redundancies found in the file shown in Figure P1.5?

9. Identify and discuss the serious data redundancy problems exhibited by the file structure shown in Figure P1.9. (The file is meant to be used as a teacher class assignment schedule. One of the many problems with data redundancy is the likely occurrence of data inconsistencies—two different initials have been entered for the teacher named Maria Cordoza.)

Open chat