【单选题】设有关系模式R(A,B,C) ,根据语义有如下函数依赖集:F={A→B,B→C) 。关系模式R的规范化程度最高达到
【单选题】设有关系模式R(A,B,C) ,根据语义有如下函数依赖集:F={A→B,(B,C) →A}。关系模式R的规范化程序最高达到
【简答题】A good salesperson needs to like people, to be aggressive, and ________.
【简答题】Fred must been a good salesperson when he worked for us.
【简答题】A good salesperson has to be ( 积极的 ) ________ in today’s competitive market.
【单选题】In the customer-oriented approach, a good salesperson plays the role of _____.
【单选题】设有关系模式R(A,B,C) ,根据语义有如下函数依赖集:F={A→B,(B,C) → A}。关系模式R的规范化程度至少要达到______。
【简答题】A good salesperson asks customers questions to know more about their _________.
【单选题】What does the salesperson say about the grammar book?
B.
It' s in great demand.
C.
It' s nearly out of stock.
D.
It' s the best seller in the store.
【判断题】A good salesperson is born and cannot be trained afterwards.