7.) It allows you to arrange records in alphabetic or numeric order based on values in one more fields.
8.)In the database design you can add default constraints on columns to avoid data entry errors but usually the front end application that is used to capture the data does most of the validation and disallows saving of that which means the database is left untouched until the correct information is entered.
9.) Record matching compiles profiles by combining information from different database files by looking for a shared unique field.
10.) Yes based on the U.S. Laws Protecting Personal Privacy from Fair Credit Reporting Act to Health Insurance Portability and Accountability act.
11.) Since the computer has all of you information which may be obtained by hackers.
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