If a group function is used in the SELECT clause, then any individual columns listed in the SELECT clause must also be listed in the ORDER BY clause. _________________________

Another word for mode is average.

a. true b. false

Which of the following is true regarding the contractual validity of electronic contracts?

A. India recently passed a law that states that digital signatures are not legally binding. B. Electronic contracts are not enforceable by law. C. E-mail is not considered as a valid form of communication in most developed countries, including India. D. The United Kingdom recognizes digital signatures used in creation of online contracts as legally binding as any paper-based original document. E. The EU Commission has adopted an e-commerce directive that will forbid online retailers from trading by the rules of their home country.