The ____ operator eliminates duplicate values in the results of a query.

Risk identification, risk analysis, and risk evaluation are part of a single function known as risk protection. __________

Answer the following statement true (T) or false (F)

?Interface designers can obtain data, called _____, by using software that can record and measure user interaction with a system.

A. ?encapsulation metrics B. ?abstraction metrics C. ?ergonomic metrics D. ?usability metrics