更多"有会员卡表TableCards(CardID,StartDate,Sc"的相关试题:
[单项选择]有会员卡表TableCards(CardsID,StartDate,Score),CardID表示卡标识,Scord为卡积分,有视图定义: CREATE VIEW vCard AS SELECT * FROM TableCards WHERE Score BETWEEN 200 AND 500 WITH CHECR OPTION 假设(‘C0001’,‘2008/5/6’,220)是TableCards表中的一个元组,下述说法正确的是()。
A. 若要查询积分在200和300之间的有卡标识,通过视图vCARD查询会比连接在TableCards上查询的效率要高
B. 数据库系统会分配存储空间实际保存视图vCards所对应的数据
C. 语句UPDATE vCards SET Score=260 WHERE CardID=‘C0001’能成功执行
D. 语句INSERT INTO vCard VALUE (‘C0010’,‘2008/4/5’,1000)能成功执行
[单项选择]What was the score after the first 45 minutes of the final
A. Argentina 2-1 Uruguay
B. Argentina 1-2 Uruguay
C. Argentina 4-2 Uruguay
D. Argentina 2-4 Uruguay
[单项选择]To get a high score ______.
A. working hard is needed
B. one must work hard
C. working hard is very important
D. requirement is what is needed
[单项选择]Some teachers believe that students who score high in________ needs tend to make higher grades in college than those who score low.
A. acknowledgement
B. achievement
C. advertisement
D. announcement
[单项选择]Sally's score on the exam is the lowest in the class. She ______ hard.
[单项选择]John's score on the test is the highest in the class; he ______ last night.
A. must study
B. should have studied
C. must have studied
D. is sure to study
[单项选择]Tom's score on the English test is the lowest in his class; he ______ have studied very hard.
A. may
B. must
C. should
D. can
[单项选择]John's score on the test is the highest in the Class; he ______ last night.
A. must study
B. should have studied
C. must have studied
D. is sure to study
[单项选择]Johan's score on the test is the highest in the group; he ______ last night.
A. should have studied
B. must have studied
C. has studied
D. should study
[单项选择]If you want to get a high score you must first ______.
[单项选择]若有如下程序段: struct student { int num;float score; } stu[3]={{10,85},{60,58},{32,23}}; main( ) { struct student*t; t=stu; } 则下面表达式中值为58的是( )。
A. (*.num
B. *(t++)->num
C. (*++score
D. (++->score
[单项选择]The score of the Holmes-Rahe test shows ______
A. how much pressure you are under
B. how positive events can change your life
C. how stressful a major event can be
D. how you can deal with life-changing events
[单项选择]You ______ if you had had higher score in the examination.
A. must have got scholarship
B. should get scholarship
C. would have got scholarship
D. had got scholarship
[单项选择]Five score years ago, a great American, ______ symbolic shadow we stand, signed the Emancipation Proclamation.
A. with his
B. in whose
C. by him
D. of whom