In May 1961 Kennedy met with Soviet Premier Nikita Khrushchev in Vienna. Kennedy was hoping that he and Khrushchev could find a solution to avoid confrontation. Khrushchev moved to close off the flow of refugees from Communism in Berlin. He threatened that if Kennedy intervened, there would be war.
#1. C) An entity view of ability is consistent with performance goals. This view assumes that ability is stable and uncontrollable and, therefore, it cannot be changed. Given that you cannot change your ability through effort, you might as well look for situations in which you can perform effectively. Up.
Thus transaction is a weak entity set. For a weak entity set to be meaningful, it must be part of a one-to-many relationship set. This relationship set should have no descriptive attributes. The idea of strong and weak entity sets is related to the existence dependencies seen earlier.