20. technician a says an excellent way to demonstrate your skills as a repair technician is to complete a certification program. technician b says a certificate from a professional association is an enhancement to your job skills, and a good way to prove your abilities to customers and prospective employers. who is right?
a. neither a nor b
b. both a and b
c. a only
d. b only

Why is it uncommon for users to perform searches directly in database tables? a.)users are discouraged from interacting directly with tables because they might confuse tables with spreadsheets. b.) users are discouraged from interacting directly with tables because this may result in unintended changes to source data. c.)users do not have the technical skills required to perform searches directly in database tables. d.)users do not have the permissions required to perform searches directly in database tables.