This question requires that you evaluate the underlined text to determine if it is correct.
To improve performance, a SQL SELECT statement should use indexes.
Select the correct answer if the underlined text does not make the statement correct. Select
“No change is needed” if the underlined text makes the statement correct.

You are building a web application that enables international exchange students to schedule
phone calls with their prospective schools.
The application allows students to indicate a preferred date and time for phone calls.
Students may indicate no preferred time by leaving the date and time field empty. The
application must support multiple time zones.
Which data type should you use to record the student’s preferred date and time?

HOTSPOT
For each of the following statements, select Yes if the statement is true. Otherwise, select
No. Each correct selection is worth one point.