The database application is responsible for concurrency control

Which of the following is an example of duress?

A) Joe refuses to sell Harry his car unless Harry offers him more money. B) Joe, knowing of Harry's financial situation, refuses to sell him his car. C) Joe counteroffers Harry's original offer. D) Joe wants to purchase Smith's car from him, and Smith sells it to someone else. E) Joe threatens to smash Harry's car if Harry won't sell it to him.

Value added resellers (VARS) in the computer industry are service providers, unaffiliated with any single supplier, who advice their clients on their computer needs. VARS are a good example of which of the following:

a. integrators. b. independent sales agents. c. alliances. d. transactors. e. differentiators.