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

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?

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?

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

Identify and discuss the serious data redundancy problems exhibited by the file structure shown in Figure P$1\mathrm{.}5.$

Figure P$1\mathrm{.}5$ The File Structure for Problems $5-8$