You can use the Required property to specify whether a value is required in a field, ensuring that the field is left blank, or in database terms, is null

You provide ____ testimony when you answer questions from the attorney who hired you.

A. direct B. cross C. examination D. rebuttal

Which chart type requires at least three series of values in order High-Low-Close?

a. Scatter b. Bar c. None of the others d. Pie e. Column